MH-53 Pave Low (multiple) I photographed these Sikorsky MH-53 Pave Low helicopters on display at the Pima Air Museum and at the NMoUSAF. MH-53M Pave Low IV 73-1649 Pima Air Museum 2017 MH-53M Pave Low IV 68-10357 NMoUSAF 2018