>> get on the ground! >> the four-hour standoff was recorded on police helmet cameras and this video will be the key evidence in the case. detective keith sandy and s.w.a.t. team member dominique perez charged with murder in the death of james boyd, the march shooting one of several to spark a federal investigation in to a department long accused of excessive force. boyd, who was homeless, seen here after the shooting holding two knives. >> unlike ferguson and in new york city, you know, some recent high-profile cases, we're going to know, the public's going to have that information. >> there was an absolute perceived threat. >> reporter: officers will fight the charges. if convicted, they face up to life in prison. cecilia vega, abc news, los angeles. the philadelphia enquirer is reporting this morning that a settlement may be in the works between the ncaa and penn state over the way the school handled the jerry sandusky scandal.