[2_Dang_Fast]

Not to play devils advocate but there are some military uses here:

The John Murtha Johnstown-Cambria County (JMJCC) Airport is home to several military units. The airport houses the Pennsylvania Army National Guard 1-104th Attack Reconnaissance Battalion (Company's HHC,A,C,D, and E) and Det 1, 1-169th Aviation (Med-Evac). It also houses the 258th Air Traffic Control Squadron of the Pennsylvania Air National Guard, the Marine Wing Support Squadron 471 (MWSS-471), Detachment A, and the Marine Light Attack Helicopter Squadron 775 (HMLA-775), Detachment A.[2] These military units use helicopters, rather than fixed-wing planes.

So maybe it's just not an airport to nowhere afterall