flying wedge
n.
A compact, wedge-shaped formation, as of police or guards, moving as a body and used especially for penetrating crowds.

[TahlilGaran] American Dictionary ▲

flying wedge
n., informal
1. An offensive formation in football in which players link arms and line up to form a "V" with the ball carrier in the middle.
The flying wedge was so dangerous and hurt so many players that rules have forbidden it for over 50 years.
2. A group (as of guards or policemen) who use a "V" formation to help someone get through a crowd.
Police had to form a flying wedge to get the movie star through the crowd of autograph hunters.

[TahlilGaran] English Idioms Dictionary ▲