The security procedures may well prohibit all but designated personnel into that space. The General may have a problem, which will go away easily, unless he hassles the airman.
In my other life, in the Army, a new Lieutenant decided to inspect the high security guard site. As he approached, the guard called "Halt", the Lieutenant identified himself as Officer of the Guard, and started to approach the guard. The guard racked a cartridge into the chamber, and ordered him to back up 3 steps, off the protected zone.
The Lieutenant returned to the guard house, addressed the sergeant of that section of the guard watch, and demanded to know how he was to properly inspect that guard if he refused to let him within 20 feet. Sarg said "First, read the guard orders, he is required to shoot anyone within 10 feet of him. If you wish to examine him, you get his replacement out of his bunk, replace the guard on duty, and then inspect him.
Secure areas and equipment have some strange rules, and failure to know the rules is not an excuse to override them, no matter your rank.