Endosymbiosis occurs when a symbiont lives inside the body or the cells of another organism. It is a very widespread phenomenon in living things. Examples are: Rhizobia: nitrogen-fixing bacteria which live in root nodules on plants of the pea family.
Aviation ordnancemen are a close-knit community and one of the few ratings in the U.S. Navy to have their own association, the Association of Aviation Ordnancemen. In addition, the aviation ordnanceman slogan is IYAOYAS, meaning: If you ain't ordnance, you ain't shit.. One of the most notable aviation ordnancemen was Lieutenant John Finn, who came up as an enlisted sailor making it to the rank of chief petty officer.
Explosive ordnance disposal (EOD) is a military occupational specialty (MOS) held by all branches of service except the Coast Guard.EOD technicians from all services are trained at the Naval School Explosive Ordnance Disposal (NAVSCOLEOD) at Eglin Air Force Base, Florida.rmy EOD is best known for locating, identifying, evaluating, rendering safe, recovering, and determining the final disposition of all explosive items, including chemical, biological, radiological, and nuclear ordnance, improvised explosive devices, unexploded ordnance, and previously unknown ordnance.