She starts singing softly in an unidentified language until something interesting happens, Jetpack restarts the conversation, or the patrol ends.
The door opens to show a man in a suit tapping on a laptop's keyboard. He stands up when she walks in—tall, broad shoulders, a scar on his right cheek, with an air an Earthling might call 'ex-military'—and offers to shake Mountain's hand. "I'm Piers Reinhold, Deputy Chief Director of the PRT."
She peels back the granite armor to shake his hand. "Nice to meet you. I am Mountain. I hear PRT is like the Protectorate but not made of capes?"
"You know I want to help build things? And I am not from this world? Also I have notes on tunnel that could use work from when patrol flew over them."
"Good, thanks!" The helmet comes off, attaching to her back, to give room to put the earpiece on. "Does it go from mine to English as well as English to mine?"
"This version doesn't. Sometimes it will translate something in a way that doesn't make sense, or beep to inform you it doesn't trust its translation. In both cases you can press the button and tell it it made a mistake, and propose a correction if you want. It connects to a central server so it won't work in your mountain."
"Good! So, we've managed to convince the Sentai Elite that we haven't brainwashed you and you're not going to be infiltrating them and feeding us classified information, but they want to speak with you anyway just to be sure." The translation has a small delay, causing it to be out of sync with his voice and lips. "They also probably want to make a pitch for you to join them, which you are completely free to do, of course." He does not betray any feelings about it in either tone or body language.
"I almost don't want to join anyone. If I join I would say it is for a few months and then I might quit, because I don't know if I like it."