William Gregg King Jr. (14 December 1918 – 21 June 2009) was a brigadier general in the United States Air Force (USAF).

[2] King's education was interrupted in 1941 by World War II, when he was commissioned through the ROTC as a second lieutenant in the United States Army Coast Artillery Corps and called up for active duty.

[1] After the war, King completed interrupted studies at the University of Kansas, from which he graduated with his Bachelor of Science degree in engineering in January 1946.

[1][2] King completed a training course on guided missiles at Fort Bliss, Texas, and was assigned to the newly formed Joint Long Range Proving Ground at Patrick Air Force Base in Florida.

[3] In 1957, King became the weapons systems project officer for the SM-62 Snark intercontinental range surface-to-surface cruise missile, and he oversaw its deployment at Presque Isle Air Force Base in Maine.