Possibly yep. Could be got rid of easily.
I don't see how they could avoid spreading bloody footprints, granted shoes can be easily destroyed. Bloody footprints might help LE some. But if they got a lot of blood on their person, they got to clean up somewhere before returning home. Got to make sure weapons are gone, vehicles cleaned up.
Then return to their normal life and pretend they know nothing, after all they done. Thats a pretty tall order. Anyone they were around would almost have to notice something different in their demeanor, I would think.
Pair of work overalls, muck style rubber boots from Wally World, and a pair of gloves (blend right in as if you'd been working if anyone sees you out). Last time I was on 32, it was late in the afternoon, on a holiday weekend, and traffic was practically nil (much the same as the highways into the mountains here). Now 23 had state boys, and other LE, pulling vehicles over left and right all the way to Chillicothe. There's a rest stop right up from UHR, it couldn't get much more deserted than the afternoon we went through. Might've stopped in there, shucked off the coveralls, put them in trash bags, washed hands and faces, and headed out.
If KR was last, he's over 200' off the road. Take off the coveralls, have jeans and a T under them, or ready to put on, rinse off their hands, put on their regular shoes, and head on home.
I was talking about my adult kids and not keeping track of their comings and goings after they reached adulthood, when they had to move back in for a bit. If my kids had come home early in the a.m., and run the hose outside, came in started the shower, and threw clothes in the washer, I'd have stuck my head out of the bedroom door and yelled, What on earth are ya'll doing? If they'd said, We got our truck stuck, or had a flat, and got mud all over us. We hosed off outside, and stripped off our muddy clothes so we wouldn't track it inside. I'd have said, Okay, glad ya'll made it in okay, hope you didn't damage your truck, goodnight! And that would have been it. I'd have probably thought they were being thoughtful by not tromping through the house in muddy clothes. When I woke up and see the news the next morning, I'd have been very thankful that my kids had not stayed over at the Rhoden's the night before. I'd never in a million years have thought that my kids (no matter their age) would ever do something like that. Especially if it was the mother of their child, and her family.