Matthew Hartford, Col. Darren Hartford’s son, marshals in a C-17 Globemaster III with the assistance of an Airman May 2, 2014, on the flightline at Joint Base Charleston, S.C. Hartford was piloting the C-17 for his final flight as the 437th Airlift Wing commander. The final or "fini flight," is an aviation tradition in which aircrew members are met by their unit comrades, family and friends and soaked with water. (U.S. Air Force photo/ Airman 1st Class Clayton Cupit)

A C-17 Globemaster III taxi’s under water hoses May 2, 2014, on the flightline at Joint Base Charleston, S.C. Col. Darren Hartford was piloting the C-17 for his final flight as the 437th Airlift Wing commander. The final or "fini flight," is an aviation tradition in which aircrew members are met by their unit comrades, family and friends and soaked with water. (U.S. Air Force photo/ Airman 1st Class Clayton Cupit)

An Airman teaches Matthew Hartford, Col. Darren Hartford’s son, about marshalling techniques May 5, 2014, on the flightline at Joint Base Charleston, S.C. Hartford was piloting a C-17 Globemaster III for his final flight as the 437th Airlift Wing commander. The final or "fini flight," is an aviation tradition in which aircrew members are met by their unit comrades, family and friends and soaked with water. (U.S. Air Force photo/ Airman 1st Class Clayton Cupit)

Col. Darren Hartford gets sprayed by his son Matthew with the assistance of Staff Sgt. David Glowacki, 437th Operations Support Squadron weather forecaster, after finishing his final flight as the 437th Airlift Wing commander May 2, 2014, on the flightline at Joint Base Charleston, S.C. The final or "fini flight," is an aviation tradition in which aircrew members are met by their unit comrades, family and friends and soaked with water. (U.S. Air Force photo/ Airman 1st Class Clayton Cupit)