AMARILLO, Texas – The Bell H-1 platform will receive a Structural Improvement Electrical Power Upgrade (SIEPU) to optimize the aircraft to improve mission capabilities, aircrew safety, and interoperability by increasing the electrical power capacity and support the integration of additional cabin capabilities. The first unit, an AH-1Z Viper, has arrived at Bell Amarillo Assembly Center to Leer másSIEPU, the next US Marines Bell H-1 helicopter upgrade[…]