Traffic was pretty heavy so I wasn't in a hurry. ALPS must have some R3 in them because they picked up scatter way before I could see the LEO. LEO is on the left targeting traffic as they come in to OKC on i44. Doubled back to see if I would get targeted. LEO is on the left side targeting traffic as they come in to OKC on i44. First time seeing this ambush on i35 N. OKCpd LEO was setup under the bridge. He did have on his 35.5 but, was not shooting laser. R3 didn't like the angle this LEO was setup in hence the short detection. LEO on right side of road under bridge.