UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Notice of Effectiveness
Effectiveness Date:	July 21, 2010  5:00 A.M.

Form:	S-4
CIK: 0000892537 Company Name: MANTECH INTERNATIONAL CORP File Number: 333-168015
CIK: 0001496062 Company Name: ManTech Gray Hawk Systems, Inc. File Number: 333-168015-34
CIK: 0001496061 Company Name: ManTech GRS Solutions, Inc. File Number: 333-168015-33
CIK: 0001496060 Company Name: ManTech Information Systems & Technology Corp File Number: 333-168015-32
CIK: 0001496059 Company Name: ManTech MBI, Inc. File Number: 333-168015-31
CIK: 0001496058 Company Name: ManTech Mission Operations Corp File Number: 333-168015-30
CIK: 0001496036 Company Name: ManTech Security & Mission Assurance Corp File Number: 333-168015-29
CIK: 0001496037 Company Name: ManTech Security Technologies Corp File Number: 333-168015-28
CIK: 0001496038 Company Name: ManTech Sensor Technologies, Inc. File Number: 333-168015-27
CIK: 0001496040 Company Name: ManTech Solutions & Technologies Corp File Number: 333-168015-26
CIK: 0001496042 Company Name: ManTech SRS Technologies, Inc. File Number: 333-168015-25
CIK: 0001496043 Company Name: ManTech Support Technology, Inc. File Number: 333-168015-24
CIK: 0001496044 Company Name: ManTech Systems Engineering Corp File Number: 333-168015-23
CIK: 0001496045 Company Name: ManTech Telecommunications & Information Systems Corp File Number: 333-168015-22
CIK: 0001496046 Company Name: ManTech Test Systems, Inc. File Number: 333-168015-21
CIK: 0001496047 Company Name: ManTech U.K. Systems Corp File Number: 333-168015-20
CIK: 0001496088 Company Name: Nexolve Corp File Number: 333-168015-19
CIK: 0001496089 Company Name: NSI Technology Services Corp File Number: 333-168015-18
CIK: 0001496090 Company Name: Symmetron Holding Corp File Number: 333-168015-17
CIK: 0001496091 Company Name: Symmetron, LLC File Number: 333-168015-16
CIK: 0001496094 Company Name: UnityNet, Inc. File Number: 333-168015-15
CIK: 0001496096 Company Name: Interop II File Number: 333-168015-14
CIK: 0001496093 Company Name: DB Data Systems, LLC File Number: 333-168015-13
CIK: 0001496087 Company Name: DDK Technology Group, Inc. File Number: 333-168015-12
CIK: 0001496085 Company Name: Gray Hawk Technology Solutions, LLC File Number: 333-168015-11
CIK: 0001496084 Company Name: Hawkeye Systems, LLC File Number: 333-168015-10
CIK: 0001496075 Company Name: ManTech Advanced Development Group File Number: 333-168015-09
CIK: 0001496073 Company Name: ManTech Advanced Systems International, Inc. File Number: 333-168015-08
CIK: 0001496063 Company Name: ManTech Global Services Corp File Number: 333-168015-07
CIK: 0001496070 Company Name: ManTech Cyber Solutions International, Inc. File Number: 333-168015-06
CIK: 0001496068 Company Name: ManTech Electronics Interoperability Services, Inc. File Number: 333-168015-05
CIK: 0001496067 Company Name: ManTech Environmental Research Services Corp File Number: 333-168015-04
CIK: 0001496066 Company Name: ManTech ETG, LLC File Number: 333-168015-03
CIK: 0001496065 Company Name: ManTech Europe Systems Corp File Number: 333-168015-02
CIK: 0001496072 Company Name: ManTech Command Control Systems Corp File Number: 333-168015-01