CHANTILLY, Va.--(BUSINESS WIRE)--Engility Holdings, Inc. (NYSE: EGL) today announced its receipt of notice from the Federal Trade Commission of the early termination of the required waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended (the “HSR Act”) with respect to Engility’s proposed acquisition of TASC. As previously announced, on October 28, 2014, Engility entered into a definitive agreement under which Engility will acquire privately-held TASC, a leadin