just doing some reading on seal team 6
came across this:
"His unit called itself “Extortion Company.” One of his Chinooks, flying under the call sign Extortion 17 (“one-seven”), was tasked with the special operations mission the night of Aug. 6. He knew the pilots and crew members aboard Extortion 17. "
https://www.dallasnews.com/news/2017/10/25/seal-team-6-and-what-really-happened-on-america-s-deadliest-day-in-afghanistan/
17 - "one seven"
just caught my eye