This is a awesome video (2min 21sec) called 'Intense Firefight Against Mahdi Army'. As a tribute to our American soldiers, here's an insight for you about what it is like for them in Iraq and Afghanistan.
US Special Forces (Army Rangers) and Iraqi soldiers conduct an operation together against Muqtada Al-Sadr's Mahdi Army, in Sadr City, Iraq.
This is one of the more intense videos I've seen.
The Rangers can be seen using infrared lasers on their M4 carbines as they are shooting.
There is also a moment where an M-134 Minigun is being fired from the turret of a HMMWV (Humvee).