CAMP LIBERTY, Iraq – Soldiers assigned to Multi-National Division-Baghdad's 16th Engineer Brigade's Add-on-Armor site work under the cover of darkness while installing newly-available armor kits, including heat and air conditioning, on multiple pieces of engineer equipment including scrapers, graders, dozers and bucket loaders. The 16th Eng. Bde.'s Add-on-Armor site is one of four armor installation sites in Iraq and the only site staffed solely by Soldiers.