It was the 16th year in the reign of King Bhumibol Adulyadej (Rama IX), and is reckoned as year 2504 in the Buddhist Era.

An advance party of the 6010th Tactical Group, USAF, arrived at Don Muang at the request of the Royal Thai government to establish an aircraft warning system.

[2] Four RF-101C reconnaissance aircraft of the 45th Tactical Reconnaissance Squadron stationed at Misawa AB, Japan, and their photo lab arrived at Don Muang under "Operation Able Marble".

The RF-101s were sent to assist RTAF RT-33 aircraft in performing aerial reconnaissance flights over Laos.

[1]: 75  Detachment 10, 13th Air Force was established to support USAF operations.