The Presidio

As I walked through the ruins of the East Battery structure, the old concrete walls seemed oppressive yet protective, a very similar feeling to Alcatraz. In one of the barracks, I saw a peculiar sentence etched into one of the doors. At first I dismissed it as graffiti, but I’m certain it contains more than at first glance.
It said, “Victor traveled to India with Sierra where they performed a passionate Tango on top of mount Alfa.”
It said, “Victor traveled to India with Sierra where they performed a passionate Tango on top of mount Alfa.”
Scroll down for a hint:
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There are some distinct letters that reveal the password.