China and Bali 72 Hours Free-transit visa

Good afternoon,

My wife that's active duty military and myself (civilian) are planning a trip to
Beijing, China for May 15, 2018 arriving 9am. and leaving Beijing, China May
17, 2018 departing 6am to Bali (Less than 72 Hours). We both US citizens.
Are we able to apply for a 72 Hours free-transit at Beijing
International airport?

Please advise,