8-K

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15 (d) OF THE
SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event report): May 11, 2005

ARGON ST, INC.

(Exact Name of Registrant as specified in its charter)

DELAWARE
(State or other jurisdiction of incorporation)

000-08193	38-1873250
(Commission File No.)	(I.R.S. Employer Identification No.)

12701 Fair Lakes Circle, Suite 800, Fairfax Virginia 22033
(Address of principal executive offices and zip code)

Registrant’s telephone number, including area code: (703) 322-0881

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions.

o Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o Pre-commencement communications pursuant to Rule 14-d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

ARGON ST, INC. AND SUBSIDIARIES

ITEM 8.01. OTHER EVENTS

     On May 5, 2005, Argon ST, Inc. (the ‘Company’) announced that its Reconnaissance Systems Group has received a contract award to design, develop and integrate a sensor subsystem for the Aerial Common Sensor (ACS) platform totaling $73.5M. The contract is issued by Lockheed Martin, Integrated System and Solutions. The Company’s press release, dated May 5, 2005, is attached as Exhibit 99.1

Exhibit Number	Description
99.1	Press Release, dated May 5, 2005, issued by Argon ST, Inc.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report be signed on its behalf by the undersigned, thereunto duly authorized.

	ARGON ST, INC.
May 11, 2005	By:	/s/ Donald F. Fultz
		Donald F. Fultz
		Chief Financial Officer

EXHIBIT INDEX

Exhibit Number	Description
99.1	Press Release, dated May 5, 2005, issued by Argon ST, Inc

EX-99.1

Exhibit 99.1

12701 Fair Lakes Circle, Fairfax, VA 22033
703.322.0881 Fax 703.322.0885
www.argonst.com

NEWS RELEASE

For Immediate Release

Argon ST, Inc. Receives Contract Award of $73.5M for Aerial Common Sensor
Subsystem Development

FAIRFAX. VA—May 5, 2005— Argon ST, Inc. (NASDAQ:STST), today announced that its Reconnaissance Systems Group has received a contract award to design, develop and integrate a sensor subsystem for the Aerial Common Sensor (ACS) platform totaling $73.5M. The contract is issued by Lockheed Martin, Integrated Systems and Solutions.

ACS will replace the current Intelligence, Surveillance, Reconnaissance (ISR) aircraft, including the Army’s Guardrail Common Sensor, the Airborne Reconnaissance Low aircraft and the Navy’s fleet of EP-3 aircraft. As part of the Lockheed Martin ACS Team, the Argon ST subsystem will provide key intelligence information that will provide U.S. Army and U.S. Navy commanders with persistent intelligence, surveillance, and reconnaissance capability.

This award supports the first phase of the contract for System Development and Demonstration (SDD) culminating in the delivery of five certified, mission-ready airborne subsystems to support initial testing planned for 2006.

Terry Collins, Chairman and CEO of Argon ST, Inc., stated, “The contract award represents a milestone for Argon ST as it further diversifies our presence into the latest new airborne platform proposed for joint service use. In addition, the ACS program will be a key component in providing the battlespace commander with real time decision quality information. With the open architecture framework, our system will be software upgradeable to ensure compatibility with the Army’s Future Combat System.”

Mr. Collins further stated, “The timing of this award is still consistent with our planning for our fiscal year 05 performance. We have been preparing the necessary infrastructure and staff to meet Lockheed Martin’s schedule of performance in anticipation of the contract signing.”

Argon ST designs, develops, and manufactures systems and sensors for the Command and Control, Communications, Computers, Intelligence, Surveillance, and Reconnaissance (C4ISR) markets including ESM (Electronic Support Measures), EW (Electronic Warfare), imaging, and acoustic systems serving domestic and worldwide markets.

FOR MORE INFORMATION, CONTACT:
Donald F. Fultz, 703-995-5695
don.fultz@argonst.com
URL: www.argonst.com