Low flying helicopters and several explosions were seen in downtown San Francisco during "Matrix 4" filming on February 23.

The helicopters spotted were hovering around "50 feet or so" above the ground, according to the filmer.

This helicopter was spotted in downtown San Francisco on February 23, 2020. The helicopter was holding its position ~50 or so feet off the ground while it was being filmed for “Matrix 4”.

This footage shows 3 stunt helicopters flying through downtown San Francisco as part of “Matrix 4” filming.

This is footage of helicopters holding in the sky to await a filming sequence for Matrix 4, followed by a fly by between buildings in downtown San Francisco.

This is footage of 2 stunt helicopters circling over downtown San Francisco while filming for Matrix 4.

This is footage of one of the stunt helicopters flying in between buildings in downtown San Francisco as part of “Matrix 4” filming.