Stealth disappearing in plain sight

One of the last two, a specialist with TRUMAN on his jacket, looked all around. “Where’d the woman go?”
“What woman?” The other soldier, labeled FRANKLIN, had been one of the last to disembark.
“With the black cape. Where’d she go? She was right here before the captain deployed.”
All six of them scanned the area around the helicopter. There was ten feet of open space in every direction. Where the woman had been standing, on the far side of Freedom’s impact crater, there was twice that distance to the nearest piece of cover. And most of that cover had been destroyed when the captain had punched the guy claiming to be the Mighty Dragon.
…

“The five soldiers exchanged a quick set of looks. Then they looked at each other again. “Hey,” said Franklin, “where the hell did Mike go?”

Excerpt From Ex-Patriots, pg 184-185
Peter Clines
https://books.apple.com/us/book/ex-patriots/id585738393