EX-24.1

				Power of Attorney

	Know all by these presents, that the undersigned hereby makes,
constitutes and appoints each of Julia E. Herr and Joseph Cosmai, or either of
them acting singly, and with full power of substitution and re-substitution,
the undersigned's true  and lawful attorney-in-fact (each of such persons and
their substitutes being referred to herein as the "Attorney-in-Fact"), with
full power to act for the undersigned and in the undersigned's name, place and
stead, in any and all capacities, to:

	1.	Prepare, execute, and submit to the Securities and Exchange
Commission ("SEC") a Form ID, including amendments thereto, and any other
documents necessary or appropriate to obtain codes and passwords enabling the
undersigned to make electronic filings with the SEC of reports required or
considered by the Attorney-in-Fact to be advisable under Section 13 or Section
16 of the Securities Exchange Act of 1934 (the "Exchange Act") or any rule or
regulation of the SEC;

	2.	Prepare, execute and submit to the SEC, and/or any national
securities exchange on which securities are listed any and all reports
(including any amendments thereto) the undersigned is required to file with
the SEC, or which the Attorney-in-Fact considers it advisable to file with the
SEC, under Section 13 or Section 16 of the Exchange Act or any rule or
regulation thereunder, or under Rule 144 under the Securities Act of 1933
("Rule 144"), with respect to the any security, including Forms 3, 4 and 5,
Schedules 13D and 13G, and Forms 144; and

	3.	Obtain, as the undersigned's representative and on the
undersigned's behalf, information regarding transactions in equity securities
from any third party, including the issuer of such security and any brokers,
dealers, employee benefit plan administrators and trustees, and the
undersigned hereby authorizes any such third party to release any such
information to the Attorney-in-Fact.

	The undersigned acknowledges that:

	a)	This Power of Attorney authorizes, but does not require, the
Attorney-in-Fact to act in his or her discretion on information provided to
such Attorney-in-Fact without independent verification of such information;

	b)	Any documents prepared or executed by the Attorney-in-Fact on
behalf of the undersigned pursuant to this Power of Attorney will be in such
form and will contain such information as the Attorney-in-Fact, in his or her
discretion, deems necessary or desirable;

	c)	The Attorney-in-Fact does not assume any liability for the
undersigned's responsibility to comply with the requirements of Section 13 or
Section 16 of the Exchange Act or Rule 144, any liability of the undersigned
for any failure to comply with such requirements, or any liability of the
undersigned for disgorgement of profits under Section 16(b) of the Exchange
Act; and

	d)	This Power of Attorney does not relieve the undersigned from
responsibility for compliance with the undersigned's obligations under Section
13 or Section 16 of the Exchange Act, including, without limitation, the
reporting requirements under Section 13 or Section 16 of the Exchange Act.

	The undersigned hereby grants to the Attorney-in-Fact full power and
authority to do and perform each and every act and thing requisite, necessary
or advisable to be done in connection with the foregoing, as fully, to all
intents and purposes, as the undersigned might or could do in person, hereby
ratifying and confirming all that the Attorney-in-Fact, or his or her
substitute or substitutes, shall lawfully do or cause to be done by authority
of this Power of Attorney.

	This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms 4 or 5 or Schedules 13D or 13G
or Forms 144 with respect to the undersigned's holdings of and transactions in
securities, unless earlier revoked by the undersigned in a signed writing
delivered to the Attorney-in-Fact. This Power of Attorney revokes all previous
powers of attorney with respect to the subject matter of this Power of
Attorney.

	IN WITNESS WHEREOF, the undersigned has executed this Power of
Attorney as of June 9, 2021.

						/s/ Marilyn Simons
						------------------
						Signature

EX-24.2

				Power of Attorney

	Know all by these presents, that the undersigned hereby makes,
constitutes and appoints each of Julia E. Herr and Joseph Cosmai, or either of
them acting singly, and with full power of substitution and re-substitution,
the undersigned's true  and lawful attorney-in-fact (each of such persons and
their substitutes being referred to herein as the "Attorney-in-Fact"), with
full power to act for the undersigned and in the undersigned's name, place and
stead, in any and all capacities, to:

	1.	Prepare, execute, and submit to the Securities and Exchange
Commission ("SEC") a Form ID, including amendments thereto, and any other
documents necessary or appropriate to obtain codes and passwords enabling the
undersigned to make electronic filings with the SEC of reports required or
considered by the Attorney-in-Fact to be advisable under Section 13 or Section
16 of the Securities Exchange Act of 1934 (the "Exchange Act") or any rule or
regulation of the SEC;

	2.	Prepare, execute and submit to the SEC, and/or any national
securities exchange on which securities are listed any and all reports
(including any amendments thereto) the undersigned is required to file with
the SEC, or which the Attorney-in-Fact considers it advisable to file with the
SEC, under Section 13 or Section 16 of the Exchange Act or any rule or
regulation thereunder, or under Rule 144 under the Securities Act of 1933
("Rule 144"), with respect to the any security, including Forms 3, 4 and 5,
Schedules 13D and 13G, and Forms 144; and

	3.	Obtain, as the undersigned's representative and on the
undersigned's behalf, information regarding transactions in equity securities
from any third party, including the issuer of such security and any brokers,
dealers, employee benefit plan administrators and trustees, and the
undersigned hereby authorizes any such third party to release any such
information to the Attorney-in-Fact.

	The undersigned acknowledges that:

	a)	This Power of Attorney authorizes, but does not require, the
Attorney-in-Fact to act in his or her discretion on information provided to
such Attorney-in-Fact without independent verification of such information;

	b)	Any documents prepared or executed by the Attorney-in-Fact on
behalf of the undersigned pursuant to this Power of Attorney will be in such
form and will contain such information as the Attorney-in-Fact, in his or her
discretion, deems necessary or desirable;

	c)	The Attorney-in-Fact does not assume any liability for the
undersigned's responsibility to comply with the requirements of Section 13 or
Section 16 of the Exchange Act or Rule 144, any liability of the undersigned
for any failure to comply with such requirements, or any liability of the
undersigned for disgorgement of profits under Section 16(b) of the Exchange
Act; and

	d)	This Power of Attorney does not relieve the undersigned from
responsibility for compliance with the undersigned's obligations under Section
13 or Section 16 of the Exchange Act, including, without limitation, the
reporting requirements under Section 13 or Section 16 of the Exchange Act.

	The undersigned hereby grants to the Attorney-in-Fact full power and
authority to do and perform each and every act and thing requisite, necessary
or advisable to be done in connection with the foregoing, as fully, to all
intents and purposes, as the undersigned might or could do in person, hereby
ratifying and confirming all that the Attorney-in-Fact, or his or her
substitute or substitutes, shall lawfully do or cause to be done by authority
of this Power of Attorney.

	This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms 4 or 5 or Schedules 13D or 13G
or Forms 144 with respect to the undersigned's holdings of and transactions in
securities, unless earlier revoked by the undersigned in a signed writing
delivered to the Attorney-in-Fact. This Power of Attorney revokes all previous
powers of attorney with respect to the subject matter of this Power of
Attorney.

	IN WITNESS WHEREOF, the undersigned has executed this Power of
Attorney as of June 9, 2021.

						/s/ James Simons
						------------------
						Signature

EX-24.3

				Power of Attorney

	Know all by these presents, that the undersigned hereby makes,
constitutes and appoints each of Julia E. Herr and Joseph Cosmai, or either of
them acting singly, and with full power of substitution and re-substitution,
the undersigned's true  and lawful attorney-in-fact (each of such persons and
their substitutes being referred to herein as the "Attorney-in-Fact"), with
full power to act for the undersigned and in the undersigned's name, place and
stead, in any and all capacities, to:

	1.	Prepare, execute, and submit to the Securities and Exchange
Commission ("SEC") a Form ID, including amendments thereto, and any other
documents necessary or appropriate to obtain codes and passwords enabling the
undersigned to make electronic filings with the SEC of reports required or
considered by the Attorney-in-Fact to be advisable under Section 13 or Section
16 of the Securities Exchange Act of 1934 (the "Exchange Act") or any rule or
regulation of the SEC;

	2.	Prepare, execute and submit to the SEC, and/or any national
securities exchange on which securities are listed any and all reports
(including any amendments thereto) the undersigned is required to file with
the SEC, or which the Attorney-in-Fact considers it advisable to file with the
SEC, under Section 13 or Section 16 of the Exchange Act or any rule or
regulation thereunder, or under Rule 144 under the Securities Act of 1933
("Rule 144"), with respect to the any security, including Forms 3, 4 and 5,
Schedules 13D and 13G, and Forms 144; and

	3.	Obtain, as the undersigned's representative and on the
undersigned's behalf, information regarding transactions in equity securities
from any third party, including the issuer of such security and any brokers,
dealers, employee benefit plan administrators and trustees, and the
undersigned hereby authorizes any such third party to release any such
information to the Attorney-in-Fact.

	The undersigned acknowledges that:

	a)	This Power of Attorney authorizes, but does not require, the
Attorney-in-Fact to act in his or her discretion on information provided to
such Attorney-in-Fact without independent verification of such information;

	b)	Any documents prepared or executed by the Attorney-in-Fact on
behalf of the undersigned pursuant to this Power of Attorney will be in such
form and will contain such information as the Attorney-in-Fact, in his or her
discretion, deems necessary or desirable;

	c)	The Attorney-in-Fact does not assume any liability for the
undersigned's responsibility to comply with the requirements of Section 13 or
Section 16 of the Exchange Act or Rule 144, any liability of the undersigned
for any failure to comply with such requirements, or any liability of the
undersigned for disgorgement of profits under Section 16(b) of the Exchange
Act; and

	d)	This Power of Attorney does not relieve the undersigned from
responsibility for compliance with the undersigned's obligations under Section
13 or Section 16 of the Exchange Act, including, without limitation, the
reporting requirements under Section 13 or Section 16 of the Exchange Act.

	The undersigned hereby grants to the Attorney-in-Fact full power and
authority to do and perform each and every act and thing requisite, necessary
or advisable to be done in connection with the foregoing, as fully, to all
intents and purposes, as the undersigned might or could do in person, hereby
ratifying and confirming all that the Attorney-in-Fact, or his or her
substitute or substitutes, shall lawfully do or cause to be done by authority
of this Power of Attorney.

	This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms 4 or 5 or Schedules 13D or 13G
or Forms 144 with respect to the undersigned's holdings of and transactions in
securities, unless earlier revoked by the undersigned in a signed writing
delivered to the Attorney-in-Fact. This Power of Attorney revokes all previous
powers of attorney with respect to the subject matter of this Power of
Attorney.

	IN WITNESS WHEREOF, the undersigned has executed this Power of
Attorney as of June 9, 2021.

						/s/ Ashvin Chhabra
						------------------
						Signature