A system for in-air deployment of objects utilizes an aircraft having a hatch that can be opened while the aircraft is in mid-flight. An air and pressure tight container stowed within the aircraft has a doorway that is sealed to and about the hatch from within the aircraft. Mounted within the container is an expulsion system for expelling objects from the container through its doorway and the aircraft's hatch. The container may be coupled and sealed to other containers to define a contiguous volume for storing the objects and allowing movement of the objects between containers.