MANCHESTER — Recently, Aetna and ASM took delivery of seven Mercedes Sprinter Ambulances from American Emergency Vehicles (AEV). In an effort to keep up with the latest advancements in patient and provider safety, each new ambulance has arrived equipped with Stryker Performance-Load Cot Fastener Systems. In addition to securing the stretcher during transport, these devices offer guided loading and unloading, to increase both efficiency and safety.