JOINT BASE CHARLESTON, S.C. -- Dec. 12, 1958 - The U.S. Air Force ended the Goose missile program, which simulated a B-52 or B-47 on radar, in favor of the Snark missile.

Dec. 13, 1948 - Col. Edward P. Eagan flew 20,559 miles around the world from New York and back, in a record 147 hours, 15 minutes.

Dec. 14, 1986 - Chuck Yeager left Edwards Air Force Base, Calif., on a record-setting flight to Kitty Hawk, N.C.

Dec. 15, 1964 - The first U.S. Air Force gunship, the AC-47 entered combat in Vietnam.

Dec. 16, 1976 - The first F-16A Fighting Falcon was delivered to Edwards AFB, Calif. for testing.

Dec. 17 1969 - Secretary of the Air Force Robert C. Seamans Jr., announced that the Air Force had ended the Project Blue Book investigation of unidentified flying objects.

Dec. 18 1972 - President Nixon directed the resumption of full-scale bombing and mining in North Vietnam, in an operation known as Linebacker II.