Between 1971 and late 1977, the 18th Tactical Fighter Squadron was inactive. In 1977 it was reactivated and assigned to the 21st Tactical Fighter Wing at Elmendorf AFB, Alaska, flying the F-4E. The Blue Foxes participated in a Maple Flag exercise in 1978, resulting in the rather impressive "kill" scoreboard seen on the left hand intake of F-4E-35-MC, 67-0302. Note her PACAF style serial number presentation (it should read "AF 67 302"). She's one of the many early model F-4Es upgraded in the 1970s with slatted wings and other improvements. Oddly, the 18th appears to have used white as its squadron color while part of the 21st TFW, only reverting to medium blue after the squadron was moved to Eielson AFB and reequipped with the A-10A, and assigned to the newly activated 343rd TFW in January of 1982. Their sister F-4E squadron, the 43rd TFS, reequipped with elderly F-15As and Bs at the same time, becoming once again the only fighter squadron assigned to the 21st TFW.
Careful study of the location of the vertical tail 'slime light' on these older Phantoms (which didn't have them when built) reveals that there was pretty wide variation in their exact placement. You can lay out codes of known sizes against landmarks (panel lines, etc) on the airframe, and no two of them will have the 'slime light' in the same spot.