EXHIBIT 32.2

WRITTEN STATEMENT OF CHIEF FINANCIAL OFFICER

PURSUANT TO SECTION 906 OF THE

SARBANES-OXLEY ACT OF 2002

The undersigned, the Chief Financial Officer of KBR, Inc. (“the Company”), hereby certifies that to his knowledge, on the date hereof:

(a) the Form 10-K of the Company for the period ended December 31, 2010, filed on the date hereof with the Securities and Exchange Commission (the “Report”) fully complies with the requirements of Section l3(a) or 15(d) of the Securities Exchange Act of 1934; and

(b) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Susan K. Carter

Susan K. Carter

Chief Financial Officer

Date: February 23, 2011