Player Embed Code: Download Embed Share DOD Officials Testify on the Challenges of the F-35 Program, Part 2 Defense.gov Nov. 13, 2019 | 50:22 Ellen M. Lord, undersecretary of defense for acquisition and sustainment, and Robert F. Behler, the Defense Department’s director of operational test and evaluation, testify at a joint hearing of the House Subcommittees on Readiness and Tactical Air and Land Forces. Air Force Lt. Gen. Eric T. Fick, F-35 program executive officer, will also testify. The subject of the hearing is the Sustainment, Production, and Affordability Challenges of the F-35 Program, Nov 13, 2019.