Stratford, Conn.-based Sikorsky Aircraft has finished upgrades to the first S-61T airframe for the U.S. Department of State. In 2010, the State Department purchased more than 100 S-61s, which Sikorsky is modernizing as part of its S-61T program. Sikorsky Aerospace Services is managing the upgrades, which include force protection enhancements, glass cockpits, main rotor blades, modular wiring harnesses, and modern survivability equipment. The helicopters are intended for diplomatic service in Afghanistan. Carson Helicopters will complete the S-61Ts in Perkasie, Pa.