Aerial chase in Katie's backyard

So, I ended up driving my friend Katie Sandling back to her house today so she could pick up her computer. Little did I know that I would witness a high-speed avian chase. As I pulled into her driveway, an accipiter (Cooper's Hawk, most likely) whipped in front of the car chasing a Mourning Dove. The accipiter disappeared behind Katie's house too fast for me to get a positive ID on it, but it was the right size for a Cooper's.