Question: The Air Force usually does not have fighter aircraft escort the presidential aircraft over the United States but it has occurred, for example during the attack on the World Trade Center. does air force one travel with fighter escort

Answer: no

Question: A check valve, clack valve, non-return valve, reflux valve, retention valve or one-way valve is a valve that normally allows fluid (liquid or gas) to flow through it in only one direction. is check valve and non return valve same

Answer: yes

Question: ''The Farm'' was produced to serve as a backdoor pilot for a proposed spin-off series starring Wilson as Dwight, which NBC ultimately did not pick up. The episode received mostly negative reviews from television critics, with many criticizing Dwight's farm storyline and some critics calling it a ''Frankenstein episode''. The episode was viewed by 3.54 million viewers and received a 1.9/5 rating among adults between the ages of 18 and 49. The episode ranked fourth in its timeslot, and it was the highest-rated NBC series of the night. was there going to be an office spin off

Answer:
yes