Check out this statistic by the Heritage Foundation:
44.4% Military absentee ballots were not counte in 2016 because they were recieved after applicable deadline.
https://www.whitehouse.gov/sites/whitehouse.gov/files/docs/pacei-the-heritage-foundation-presentation-07192017.pdf
'''Uniformed and Overseas Citizens
Absentee Voting Act'''
https://www.fjc.gov/sites/default/files/2016/Overseas%20Voting.pdf
Interestingly - this independent organization quotes the same return percentage, 68.1%, but says only 1.5% were rejected because hey were not received by election offices on time.
https://www.eac.gov/news/2017/06/29/newly-released-2016-election-administration-and-voting-survey-provides-snapshot-of-nations-voter-turnout-registration-trends-voting-systems-election-administration-and-voting-survey-eavs-data-media/
Not adding up.
Military absentee ballots NEED TO BE COUNTED.