Answer this question: who wrote the song cocaine?
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Answer: "Cocaine" is a song written and recorded by JJ Cale in 1976, but also known as a cover version recorded by Eric Clapton .

Answer this question: what is cta used for?
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Answer: Computed tomography angiography (CTA) is a computed tomography technique used to visualize arterial and venous vessels throughout the body.

Answer this question: what came first army or air force?
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Answer:
The AAF was a component of the United States Army , which in 1942 was divided functionally by executive order into three autonomous forces: the Army Ground Forces , the Services of Supply (which in 1943 became the Army Service Forces ), and the AAF.