Without spoiling too much, here is some of what Ana could have seen when she was at Fort Bliss, Texas, in El Paso. First, the likely building she ended up in:
Then, the view from that approximate point showing the mountains she noticed (the Franklin Mountains, the southernmost end of the Rocky Mountains).
Next the boulevard with the stately houses (for flag officers, mostly):
Here's the alley she ended up in. The gate leading off base is at the end of it, on the left.
And here's that gate. The alley joins the street on the left, between the palm trees, by the stone column.