Stealth’s enemy analysis, acrobatic skills

She nodded. “We can cross there.” Her arm was out and pointing west, another long shadow in the night. “Midpoint between two torches. In another three minutes, if the guards follow the same pattern, none of them should be along that section of wall.”
He nodded and counted off the time in his head. They raced across the tiered rooftop and threw themselves into the night. Stealth grabbed a streetlight, spun once around the arm, and flipped across the street. She grabbed St. George’s waiting hand above the wall, kicked her legs, and sailed across to another rooftop.

Excerpt From Ex-Heroes, pg 302-303
Peter Clines
https://books.apple.com/us/book/ex-heroes/id585738407