Map 4 of Maps of SEA in the 1960s

In early March 1965 the government of Thailand authorized the use of Thai-based American aircraft to strike into North Vietnam .  With the start of Rolling Thunder missions on March 2, the out-country interdiction campaign began in earnest.  Takhli and Korat were the two main bases for USAF F-105s.  B-52s at U-Tapao shortened flight times necessary for missions flown from Guam.  The Wolfpack of the 8th TAC Fighter Wing flew from Ubon.  Udorn aircraft included F-4s, RF-4s, SAR teams with HH-3s and A-1s, and some Air Commando operations in support of the Laotian ground war.  NKP hosted all prop-driven aircraft including A-26s, T-28s,   C-123s, O-1s, and SAR teams.