Guam International Airport falls under the control of the American TSA (Transport Security Administration), and their website has some information about travelling with firearms and ammunition.

Competitors transiting Guam International Airport should download and read the advice received from IPSC Guam, which includes a copy of the Continental Airlines policy in respect of firearms & ammunition.

If the competitor wants to actually attend a shooting match in Guam, and therefore take his firearms and ammunition with him, arrangements must be made in advance with IPSC Guam, who can be contacted by email.