She saw a black man in the uniform of a police officer. Hardly surprising. But he was swinging a weapon shaped like a naginata in a horizontal sweep.
If she had moved backward or forward, she might have been caught by that blade. Another Noble Phantasm... What can it mean...?
Despite her doubts, Assassin kicked off the ceiling and aimed a kick at the naginata man. “Guh!”
He blocked by a hair’s breadth with the haft of his weapon, but the kick still sent him flying down the hallway.
No resistance. Is he not a Heroic Spirit?

Fate/Strange Fake: Volume 2, Chapter 3 ("Day 1, Early Dawn")