While these planes are only referred to as "air force one" 2 while the president is on board, the term is commonly used to describe either of the two aircraft normally used and maintained by the u. s. air force solely for the president. read the passage underlined (2). there may be a mistake in punctuation, capitalization, or spelling. if you find a mistake, choose the answer that corrects a mistake. if there is no mistake, choose ‘correct as is.’ a) correct as is. b) while the president is on board the term is commonly used c) while, the president is on board, the term is commonly used d) while the president, is on board, the term is commonly used