ranger assessment and selection Ranger Assessment and Selection, known as RASP, is an intense, eight-week course designed to test a Soldierâs physical and mental strength under extreme conditions. Candidates must earn the right to don the tan beret and become a member of the 75th Ranger Regiment.
And Rin Tin Tin has always been more than a dog. He was an idea and an ideal â a hero who was also a friend, a fighter who was also a caretaker, a mute genius, a companionable loner. He was one dog and many dogs, a real animal and an invented character, a pet as well as an international celebrity.
Tin is a chemical element with the symbol Sn (for Latin: stannum) and atomic number 50. It is a main group metal in group 14 of the periodic table. Tin shows a chemical similarity to both neighboring group-14 elements, germanium and lead, and has two possible oxidation states, +2 and the slightly more stable +4.in is the 49th most abundant element in Earth 's crust, representing 2 ppm compared with 75 ppm for zinc, 50 ppm for copper, and 14 ppm for lead. Tin does not occur as the native element but must be extracted from various ores.