So the questions never seem to end on this one.
AUTEC WEAPONS RANGE
Deep Water Range - The deep water Weapons Range lies roughly parallel to the east coast of Andros Island. It is the largest and most versatile of the AUTEC ranges, and it is capable of tracking up to 63 in-water objects simultaneously. The range is supported by the Main Base (Site 1) and various smaller sites located to the south along the east coast of Andros Island. AN/WQC-2A Sonar Communications Sets and Bi-Directional Communications Nodes provide underwater voice communications for mobile target and emergency command signal coverage, while HF, UHF, and VHF radio communications are available over the entire range.
In-Air Tracking - In-air tracking is provided by radars and various other in-air tracking systems such as LATR, the Hyperbolic In-Air Tracking System (HITS), and DGPS. These in-air systems cover the AUTEC Weapons Range up to a distance of 500 nautical miles (926 kilometers) from Site 1 and a height of 70,000 feet (21,000 kilometers). Surveillance radars operate to support air and surface safety.
In-Water Tracking - The in-water portion of the Weapons Range covers 500 square nautical miles. This range can be divided into two distinct tracking areas consisting of roughly 250 square nautical miles. This flexibility allows for the unique operation of two distinct individual exercises. Use of the total range is referred to as "Weapons Range", while dividing the range into two distinct portions, the northern section is referred to as "Weapons Range North", whereas the southern portion is called "Weapons Range South".
http://www.raytheon.com/media/pac08/pdf/mk48_torpedo_fact.pdf
Torpedos are not designed to be reusable however the test weapons are used without warheads and can be reused. I cannot find much on the internet about the true safeties on the weapon so until I can I wont post to much on here. As far as lighting one off on land.....I am sure you could do it but I am not sure why you would other than to test a test weapon. I do know that with test weapons they were designed to shut down and float to surface to be reused. However I am sure I was not the only one to hear one bounce off the sub because it didnt shut down. Autec was and is the testing range for subs and other vessels to go play and be monitored.