This cache is located on FR22 and it is part of an occasional series of caches scattered in the ONF featuring some historic U.S. Navy aircraft.
The twelfth featured aircraft in this series is the McDonnell Douglas F-4 Phantom. Per Wikipedia, the F-4 Phantom is a tandem-seat fighter-bomber designed as a carrier-based interceptor to fill the U.S. Navy's fleet defense fighter role. Innovations in the F-4 included an advanced pulse-Doppler radar and extensive use of titanium in its airframe.
Despite imposing dimensions and a maximum takeoff weight of over 60,000 lb, the F-4 has a top speed of Mach 2.23 and an initial climb rate of over 41,000 ft/min. The F-4's nine external hardpoints have a capability of up to 18,650 pounds of weapons, including air-to-air and air-to-surface missiles, and unguided, guided, and thermonuclear weapons.
The F-4 was used extensively during the Vietnam War. It served as the principal air superiority fighter for the U.S. Air Force, Navy, and Marine Corps and became important in the ground-attack and aerial reconnaissance roles late in the war. The F-4 continued to form a major part of U.S. military air power throughout the 1970s and 1980s, being gradually replaced by more modern aircraft such as the F-15 Eagle and F-16 Fighting Falcon in the U.S. Air Force, the F-14 Tomcat in the U.S. Navy, and the F/A-18 Hornet in the U.S. Navy and U.S. Marine Corps. The F-4 was also the only aircraft used by both U.S. flight demonstration teams: the U.S. Navy Blue Angels and the U.S. Air Force Thunderbirds.
FR22 is mostly 2WD friendly, but it does have a few sketchy spots, especially after wet weather. Remember, this is the forest, so watch for things that might bite, sting, scratch, cut, poke or trip you.