Who would investigate the failed nuclear test in Thunderbirds?

Who would conduct the inquiry into the missile fault behind the nuclear-test accident in Atlantic Inferno?

The fictional government structures are too incomplete for a firm answer. Responsibility is tentatively placed on the testing authority, without identifying the inquiry body.

The World Navy's nuclear-test accident in the Thunderbirds episode Atlantic Inferno raises the question of who would investigate the missile fault. The fictional world's government structures are too incomplete to identify an inquiry body confidently. Responsibility is tentatively placed on the authority conducting the test. Assigning blame to that authority leaves the investigating institution, its procedure and its findings unspecified.