Brubaker Farms is both a diary and green energy producer in Mount Joy, PA on March 19, 2011. https://www.rawpixel.com/image/3306471/free-photo-image-biodigester-cattle-cowsFree Image from public domain licenseA German army Marder infantry fighting vehicle with the 391st Mechanized Infantry Battalion lays suppressive fire at Vaziani… https://www.rawpixel.com/image/8728211/photo-image-fire-public-domainFree Image from public domain license