Ahh, there's a blinking light on the top. Use perk to see equipment. Use tactical before rushing in. USE MARATHON AND YOU CAN JUST RUN RIGHT BY BEFORE IT BLOWS UP! I say that in caps because it happens all the time to me. Trust me, I place mine in good spots too. It's the only none streak mine there is in the game. It's not OP IMO. You can't get more from scavenger either.
if you read a prior post of mine i normally run with blast shield also marathon does not allow you to run past them in hard core game modes its just unlimited sprinting you are better off going with agility but still cant run past them and if you run sit rep and blast shield its 4 slots filled, sit rep is just 2 but thats cool and all that you can see them but like ive mentioned before sometimes there in places you cant pr detonate them b4 going through so you have to go all the way around the map to get by them. blast shield i think is great and helps a lot but not all the time. and what i posted was about being killed by one from 12-15 ft away that was set off by another team mate (who had blast shield). all i was getting at was making the blast radius a true 4-5 ft.