The pale Skyhawk [on the deck of CV 10 Yorktown below] is likely to be The A-4C variant. The A-4A/B/C have a major feature in common —- they only have three major weapon or store stations. centerline and port /starboard underwing stations. The A-4 (originally the A4D) was intended to carry a special weapon on the centerline and a 300-gallon drop tank under each wing. The J65 turbojet engine provided lots of thrust. It also powered the F-84 Thunderstreak, the principal tactical fighter-bomber for the USAF’s Tactical Air Command. The first two models of Skyhawks were limited in their avionics. The A-4C was the Skyhawk produced in largest numbers (approx. 683). The next variant, the A-4E, was the first to have a radar with a limited capacity for navigation. Many A-4C were upgraded to the A-4L variant. - David P. Murphy