sentences:  The B-50 gave the unit the capability to carry heavy loads of conventional weapons faster and farther as well as being designed for atomic bomb missions if necessary.By 1951, the emergence of the Soviet Mig-15 interceptor in the skies over North Korea signaled the end of the propeller-driven B-50 as a first-line strategic bomber.The squadron received Boeing B-47 Stratojet jet bombers in 1954.