0001019056-09-000506 SC 13D/A 1 20090501 20090501 ATS CORP 0001325460 8742 113747950 DE 1231 SC 13D/A 34 005-81087 09786935 7925 JONES BRANCH DRIVE MCLEAN VA 22102 571-766-2400 7925 JONES BRANCH DRIVE MCLEAN VA 22102 Federal Services Acquisition CORP 20050429 Carl Marks & Co. Inc. 0001289682 133146265 NY 1231 SC 13D/A 900 THIRD AVENUE 33RD FLOOR NEW YORK NY 10022 212-909-8400 900 THIRD AVENUE 33RD FLOOR NEW YORK NY 10022 SC 13D/A 1 ats_13da5.htm AMENDMENT NO. 5