A dog lunges at a soldier of 1st Platoon Charlie Co. of the 2/87 Infantry Regiment, 3rd Brigade 10th Mountain Division based at COP Sayedabad as he searches a house during an air assault on the village of Lachikhel in the Tangi Valley in Wardak province. A mix of combat operations, kinetics in military terminology, and outreach and governance support, or COIN operations, have characterized the experience of the 3/10 in Afghanistan.