what do you call a person who does acrobatics
Aerial silk The fabrics used as silks are very strong with some give and flexibility. The fabric is 2-way stretch polyester lycra or Tricot Nylon. The width varies depending on the routine and the acrobat. The fabric is usually quite long, as it is doubled for rigging, giving the acrobat two strips of fabric to work with as they perform.[citation needed]
Non-commissioned officer A non-commissioned officer or noncommissioned officer (NCO, colloquially non-com or noncom) is a military officer who has not earned a commission.[1][2][3] Such is also called sub-officer in some countries. Non-commissioned officers, in the English-speaking world, usually obtain their position of authority by promotion through the enlisted ranks.[4] In contrast, commissioned officers hold higher ranks than NCOs, have more legal responsibilities, are paid more, and often have more non-military training such as a university diploma. Commissioned officers usually earn their commissions without having risen through the enlisted ranks. "Mustang" is a slang term in the United States Armed Forces used to refer to a commissioned officer who began his or her career as an enlisted service member.[citation needed]