Official: 2 launch officers tied to drug probe

FILE - In this Wednesday, Jan. 8, 2014, file photo, U.S. Secretary of Defense Chuck Hagel talks with retired Army Col. Rebecca Hooper, program manager for the Center for the Intrepid, after Hagel spoke to soldiers, veterans and staff at the center in San Antonio. Hagel is making a rare visit to an Air Force nuclear missile base, on Thursday, hoping to boost morale among the Air Force men and women who operate, maintain and safeguard the nation's Minuteman 3 nuclear missiles, and who officials have said are increasingly tired of working in what can seem like oblivion. (AP Photo/The San Antonio Express-News, Lisa Krantz, File)

F.E. WARREN AIR FORCE BASE, Wyo. (AP) — A U.S. defense official says two Air Force officers at Malmstrom Air Force Base in Montana have been implicated in an illegal-narcotics investigation.

The defense official, speaking on condition of anonymity because he wasn't authorized to discuss the matter publicly by name, says both officers are ICBM launch officers with responsibility for operating the Minuteman 3 intercontinental ballistic missiles and work for the 341st Missile Wing.

The official says the officers' access to classified information has been suspended and the Air Force is investigating.

The investigation is the latest sign of trouble for the nation's nuclear forces, which have been suffering under security lapses, discipline problems and low morale.

Defense Secretary Chuck Hagel was at an Air Force missile base on Thursday to help boost morale.