A payload container for delivering canisters having payloads is provided. The payload container includes an open end and a closed end. The open end is configured to couple to a terminal end of a tube of a pneumatic delivery system to receive or provided a canister. The payload container further comprises a gas vent having a first gas vent opening located at the closed end of the payload container and a second gas vent opening located at the open end of the payload container. The open end is configured to couple to an air hose outlet of the pneumatic delivery system, which delivers air into the payload container to push the canister into the pneumatic delivery system tube. A depressed landing platform aids in guiding an unmanned aerial vehicle, having a payload container, into a position where a canister can be delivered to or from the pneumatic delivery system.