I think i've made some kind of connection to Q's post >>70200…
http:// www.marines.mil/News/News-Display/Article/1469344/13-conducts-caat-mounted-patrol-during-exercise-bougainville-i/
"1/3 CONDUCTS CAAT MOUNTED PATROL DURING EXERCISE BOUGAINVILLE I"
'Marine Corps Training Area Bellows, Hawaii –
U.S. Marines with 1st Battalion, 3d Marine Regiment conducted combined anti-armor team mounted patrols during Exercise Bougainville I at Marine Corps Training Area Bellows, Hawaii, March 15, 2018.
The Marines dealt with simulated improvised explosive devices and ambushes throughout the patrols and were put through a scenario where a simulated IED went off, taking out a Humvee and causing a simulated casualty.
The training event is a continuation of Exercise Bougainville I since its start at the beginning of the month. This exercise is an opportunity for Marines to conduct small unit level training to prepare for Exercise Bougainville II and future deployments.'