From collecting high volumes of air to quickly capture aerosolized particles for research, medical countermeasures, or to support an all-hazards response capability, high-velocity air samplers are a crucial tool for defense, security and health applications, both indoors and outdoors. When those particles are living organisms, maintaining their viability is very important. In other operational roles, continuous, low-volume sampling is required for forensic, tracking and baselining capability. Some applications need multiple sample gathering capability.