US Marines training shooting with the powerful US made M777 155 mm Howitzer during training (California) Thumbnail of the video showing 155mm shells with .

US Marines from 1st Reconnaissance Battalion training to shoot at target on hill with powerful M2 .50cal machine gun, Mk-19 automatic grenade launcher and .
Another good video of US military artillery firing their M777 and M119 howitzer. The M777 howitzer is a towed 155 mm artillery piece, successor to the M198 .