Alone, I stood in the cordoned area looking at the remains of an F-16s left main gear wheel rim. A whirlwind Safety Investigation Board notice two days before placed me in this hangar with a table full of junk; a damaged F-16 sat behind me on jacks. Quietly, I contemplated the pieces, methodically shifting broken metal on a table until I had a deformed, but complete, F-16 main gear rim. Within an hours time, Id arranged the tire bits around the junk rim. Three days ago these were in airworthy condition.