PHILADELPHIA - The FBI charged a US Airways employee with helping his roommate get a concealed, semiautomatic handgun onto a plane departing Philadelphia early Thursday.

Customer service agent Roshid Milledge switched black carry-on bags with passenger Damien Young at the gate so Young could board the 7 a.m. flight to Phoenix with the unloaded 9 mm weapon, the FBI said in an affidavit.

Young, 29, was moving to Phoenix and had asked Milledge about the procedures for transporting guns. Milledge, 38, instead agreed to carry the bag through an employee entrance so it would not be screened by security. . .