Clear Air Force Station ("Clear" colloq.) is an Alaska Air National Guard radar station for detecting incoming ICBMs and submarine-launched ballistic missiles to NORAD's Missile Correlation Center (MCC) and to provide Space Surveillance data to Air Force Space Command's Space Control Center (SCC). Clear's AN/FPS-123 Upgraded Early Warning Radar is part of the Solid State Phased Array Radar System (SSPARS) which also includes those at Beale AFB, Cape Cod AFS, RAF Fylingdales and Thule Site J. The "historic property" was one of the Alaska World War II Army Airfields and later a Cold War BMEWS site providing NORAD data to Colorado's BMEWS Central Computer and Display Facility (CC&DF).
In addition to the "original camp area" with buildings still in use today, areas of the station include the airfield (ICAO: PACL), the "SSPARS Site", the technical site (Utilador, BMEWS reflectors, support buildings, power plant), and the composite site (two permanent dormitories, a mess hall, recreation area, and administrative area). In addition to the Air National Guard unit, Clear has active duty USAF, Canadian Air Force, civilian, and contractor personnel.
Protactinium is a chemical element with symbol Pa and atomic number 91. It is a dense, silvery-gray metal which readily reacts with oxygen, water vapor and inorganic acids. It forms various chemical compounds where protactinium is usually present in the oxidation state +5, but can also assume +4 and even +2 or +3 states. The average concentrations of protactinium in the Earth's crust is typically on the order of a few parts per trillion, but may reach up to a few parts per million in some uraninite ore deposits. Because of its scarcity, high radioactivity and high toxicity, there are currently no uses for protactinium outside of scientific research, and for this purpose, protactinium is mostly extracted from spent nuclear fuel.
Protactinium was first identified in 1913 by Kasimir Fajans and Oswald Helmuth Göhring and named brevium because of the short half-life of the specific isotope studied, namely protactinium-234. A more stable isotope (231Pa) of protactinium was discovered in 1917/18 by Otto Hahn and Lise Meitner, and they chose the name proto-actinium, but then the IUPAC named it finally protactinium in 1949 and confirmed Hahn and Meitner as discoverers. The new name meant "parent of actinium" and reflected the fact that actinium is a product of radioactive decay of protactinium. It is noted that John Arnold Cranston (working with Frederick Soddy) is also credited with discovering the stable isotope in 1915 but delayed his announcement due to being called up for service in the First World War.
I say I'll move the mountains
And I'll move the mountains
If he wants them out of the way
Crazy he calls me
Sure, I'm crazy
Crazy in love, I say
I say I'll go through fire
And I'll go through fire
As he wants it, so it will be
Crazy he calls me
Sure, I'm crazy
Crazy in love, you see
Like the wind that shakes the bough
He moves me with a smile
The difficult I'll do right now
The impossible will take a little while
I say I'll care forever
And I mean forever
If I have to hold up the sky
Crazy he calls me
Sure, I'm crazy