The policeman's last name is Crouse.
If we look for it on the Internet, we'll be able to piece it all together:
LOS ANGELES (LALATE) – Ross Truett Ashley (photo above) has been identified in the Virginia Tech shooting 2011 of Deriek W. Crouse. Ross Truett Ashley killed Virginia Tech Police Office Deriek W. Crouse during a routine traffic stop on Thursday, officials confirm to news. Deriek W. Crouse at 12:15 pm had stopped a car in the Coliseum parking lot. Crouse was inside his car when Ashley walked up and fatally shot the Crouse. Ashley then fled the scene.
a. The gunman (Ross T. Ashley) walks up to the police officer (Deriek W. Crouse) and shoots him.
b. Crouse is sitting in his police car during a routine traffic stop.
c. Ashley is not involved in the stop - the stopped driver is.
d. The driver is cooperating with the police.
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