A wireless assembly for use with a long line, an aircraft and a battery is provided, the wireless assembly comprising: a hook, which includes an electro-mechanical actuator; a waterproof housing mounted on the hook; a wireless receiver which includes a microprocessor, is retained in the waterproof housing and is in electrical communication with the electro-mechanical actuator; a wireless transmitter, which includes a microprocessor; and a switch which is in electrical communication with the wireless transmitter, the wireless transmitter and the switch for locating in the aircraft. A method of wirelessly controlling the release of a load from the hook is also provided.