UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Notice of Effectiveness
Effectiveness Date: April 27, 2017 4:00 P.M.
Form: S-4
CIK: 0001637281
Company Name: ENGILITY Corp
File Number: 333-217383
CIK: 0001544229
Company Name: Engility Holdings, Inc.
File Number: 333-217383-07
CIK: 0000030822
Company Name: Dynamics Research Corp
File Number: 333-217383-06
CIK: 0001698230
Company Name: TexelTek, LLC
File Number: 333-217383-05
CIK: 0001698227
Company Name: Support Services Organization, LLC
File Number: 333-217383-04
CIK: 0001698229
Company Name: TASC Services Corp
File Number: 333-217383-03
CIK: 0001698226
Company Name: ATAC Services, LLC
File Number: 333-217383-02
CIK: 0001612199
Company Name: Engility LLC
File Number: 333-217383-01