In Johnny Depp's trial with Gregg Brooks, who is John Bigrigg?

Aiming for victory in his upcoming trial, where he's accused of punching Gregg Brooks twice in the ribs,Aiming for victory in his upcoming trial, 

where he's accused of punching Gregg Brooks twice in the ribs, A key witness, John Bigrigg, a retired LAPD officer, has been hired to testify.

Brooks, a location manager on the set of 'City of Lies', claims Depp punched him directly in the ribs during an incident back in April 2017.

Brooks, a location manager on the set of 'City of Lies', claims Depp punched him directly in the ribs during an incident back in April 2017.

In response to director Brad Furman's request that Brooks tell Depp that their permit was about to run out, 

After the incident, Brooks added that Depp offered him 100,000 dollars to punch him in the face.

John Bigrigg, a retired Los Angeles police officer who served as a Green Beret, could help Dep