ManTech Will Hold Conference Call to Discuss Second Quarter 2009 Results on Wednesday, July 29, 2009 at 5 p.m. ET

FAIRFAX, Va.--(Business Wire)--
ManTech International Corporation (Nasdaq:MANT):

WHAT: ManTech International Corporation (Nasdaq: MANT), will announce second quarter financial results on Wednesday, July 29, 2009, after the market close. Following the release, ManTech will host a conference call to discuss the second quarter results, as well as comment on the outlook for 2009.

WHO: On the call will be George J. Pedersen, Chairman of the Board and CEO; Lawrence B. Prior, III, President and COO; and Kevin M. Phillips, Executive Vice President and CFO.

WHEN: Wednesday, July 29, 2009

TIME: 5:00 p.m. Eastern Time

DIAL IN: 888-797-2996(Domestic); or 913-312-0829 (International)

WEB Live Web cast of the conference call via ManTech`s website:

ACCESS:
www.mantech.com. To access, click on the ManTech Investor Relations button.

REPLAY A replay of the call will be available beginning at 9 p.m. on July 29, 2009, and will remain available through midnight on August 12, 2009. To access the replay dial (888) 203-1112 (Domestic); or (719) 457-0820 (International). Pass Code 8146922.
INFORMATION:

CONTACT Lisa Robinson- lisa.robinson@mantech.com or 703-218-6082
FOR CALL:

MEDIA/ Investor Contact Media Contact
INVESTOR
Joseph Cormier
Mark Root

CONTACTS:
703-218-8258
off: 703-218-8397; cell: 571-259-1169

joe.cormier@mantech.com
mark.root@mantech.com

ManTech International Corporation
Investor Contact
Joseph Cormier, 703-218-8258
joe.cormier@mantech.com
or
Media Contact
Mark Root
off: 703-218-8397; cell: 571-259-1169
mark.root@mantech.com

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