- As of 12:30 p.m. Monday, the most recent object shot down had not been confirmed to be a Chinese spy balloon.
- The AIM-9x Sidewinder, first developed by the U.S. Navy and later utilized by the U.S. Air Force, is described by the air force as a supersonic, air-to-air missile with a high-explosive warhead and an infrared heat-seeking guidance system.
- Based on the 2021 fiscal year defense budget, AIM-9x Sidewinders cost about $430,818 for Navy use and about $472,000 for Air Force use.
