Tuesday in Africa a AV-8B Harrier and a CH-53 Super Stallion crashed in separate incidents in Djibouti-Ambouli International Airport all part of a planned training exercise. Maybe they need more practice. No one killed, some injuries.
Within 24 hours, a US Marine Corps CH-53 Super Stallion crashed in El Centro, California killing four crewmembers.
48 hours later, US Air Force F-16 crashed with the pilot killed.
US Marine Corps suffers third aviation incident in less than 24 hours"