Lockheed Chief Financial Officer Bruce Tanner told analysts on Tuesday that the company was close to reaching a deal with the Pentagon office that runs the $399 billion weapons program, the costliest arms project. The Pentagon reached an agreement earlier this month with engine maker Pratt & Whitney, a unit of United Technologies Corp (UTX.N), that lowered the cost of the engines that will power the seventh batch of jets by 4.5 percent. Lockheed, the Pentagon’s No. 1 supplier, delivered the first airplane from the sixth lot of jets on Wednesday.