The Pentagon has refrained from authorizing a plan for operational testing of Lockheed Martin's...

|About: Lockheed Martin (LMT)|By:, SA News Editor

The Pentagon has refrained from authorizing a plan for operational testing of Lockheed Martin's (LMT) F-35 program, Reuters reports, with officials expressing frustration at the pace of development in a "very painful" review on Friday. Of particular concern are the problems afflicting the F-35 helmet, which is being developed by  Rockwell Collins (COL) and Israel's Elbit Imaging (EMITF).