NASA, magniX Electrify Vintage Airliner

Thank you for your highly informative reply regarding the SD-30’s operating out of POU for Command Airways. Now there is a name I have not heard in decades! I did not know that Command became one of the first AE codeshares. But come to think back on it-I do now seem to recall AE operating SD-30’s, possibly? What equipment did Piedmont Commuter operate on the ALB - LGA leg beside the Dash-7?