Photos used under Creative Commons from The U.S. Army, oseillo, Praveen & Naveen Kumar Jangra, Ömer Ünlü, symphony of love, focusonmore.com, Aaron T. Goodman, focusonmore.com, Umming.bird, Art4TheGlryOfGod, fletchermcknight, istolethetv, Free Grunge Textures - www.freestock.ca, Horia Varlan, alefot, Daquella manera, verchmarco, redwood 1, johndillon77, focusonmore.com, verchmarco, wuestenigel, ChristianeBue, lauraflorcar, One Way Stock, jk+too