 The Bishop Airlock Module will also take advantage of the robust interface between the ACBM and PCBM to repeatedly berth and deberth a "bell" hosting similar capability.The US space program's concept of berthing was developed to mitigate issues of orbital mechanics that were encountered during the evolution of .Although not the first mechanism developed specifically for berthing, the CBM was the first such device designed in the US specifically to assemble structural joints that would hold sea-level pressure.