Life Jackets are for Everyone. A life jacket (or Personal Flotation Device - PFD) is the single most important piece of equipment on your boat and the most important consideration should be size. More than two-thirds of all boating fatalities are drowning incidents and 90% of drowning victims were not wearing a life jacket.
The Grand Canyon in the southwestern United States is located entirely in the state of Arizona. (also parts of Navada and Utah.
The Grand Canyon is a river valley in the Colorado Plateau that exposes uplifted Proterozoic and Paleozoic strata, and is also one of the 19 distinct physiographic sections of the Colorado Plateau province. It is not the deepest canyon in the world (Kali Gandaki Gorge in Nepal is much deeper).