Operation Centennial Contact
Operation Centennial Contact was an operation of the United States Air Force and National Guard conducted on 27 June 2023 to commemorate the 100-year anniversary of the first aerial refueling. Aircraft from various bases conducted aerial refueling exercises across the United States, as well conducting flyovers in 50 states. 152 aircraft were slated to participate in the operation, with 82 tanker aircraft providing refueling support to 70 other participating aircraft.

Participating aircraft

Tankers 
 49 Boeing KC-135 Stratotanker
 29 Boeing KC-46 Pegasus 
 4 McDonnell Douglas KC-10 Extender

Receivers 
 21 Lockheed C-130 Hercules
 13 Boeing C-17 Globemaster III
 10 McDonnell Douglas F-15 Eagle
 8 Lockheed Martin F-22 Raptor
 6 Fairchild Republic A-10 Thunderbolt II
 5 General Dynamics F-16 Fighting Falcon
 4 Lockheed Martin F-35 Lightning II
 2 Boeing B-52 Stratofortress
 1 Lockheed C-5 Galaxy

References 

Non-combat military operations involving the United States
United States Air Force