The KEYW Holding Corp 8-K/A Financial Statements and Exhibits

EXHIBIT 16.1

March 24, 2017

U.S. Securities and Exchange Commission

Office of the Chief Accountant

100 F Street, NE

Washington, DC 20549

Re: The KeyW Holding Corporation

Dear Sir or Madam:

We have read Item 4.01 of Form 8-K of The KeyW Holding Corporation dated March 23, 2017, and agree with the statements concerning our Firm contained therein.

Very truly yours,

/s/ GRANT THORNTON LLP