Possible Career Change...

Best of luck to you with your application, and please keep us posted as you go through the process. Bear in mind if you have anything questionable in your past, be completely open and candid about what occurred. Nothing gets you disqualified faster than a Lack of Candor response in an interview for a Law Enforcement position. Not implying that you have any issue/issues @ all, just giving unasked for advice.
The comment about responding to crashes and the inevitable gory sights you'll see is (no pun intended) "Dead-on". I was out of the Academy for about a week and on Midnight Shift patrol when I responded to my first traffic fatality as a 22 year-old Trooper. I had to help remove the bodies of two children from a wreck wherein their grandfather underestimated the sharpness of a curve in the road and as a result killed his wife and two grandchildren.
It's one of the realities of being on Patrol.

i grew up wanting to be a cop so i always kept my nose clean, have never done any drugs, of any kind, have one moving violation when i was 18, never arrested for anything, hell... never even put in cuffs... i always stayed on the straight and narrow just in case...