Top Secret are a group of drummers from Basel, Switzerland who are not military or professional but do this out of their passion for this kind of drumming. Similar to many taiko groups in Japan, this is something they do out of love and respect for their drumming traditions. (They all have day jobs but clearly have spent so much time practicing that they are way more than amateurs.)
They carry 3 extra sticks on the side of their drums in holsters. 1 is a Pfeiffer & the other 2 are spares in case one is dropped during a show. They've been trained extensively on how to seamlessly replace the dropped sticks with spares without missing a beat. Just awesomely Cool 😎 stuff brotha!
If you want some more drumline stuff...here are a few videos. Santa Clara Vangauar Double Beat (Sick Grooves) ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-O1TbaiQS5XA.html Bluecoats Flam Jam (2015) This one is just a warmup, it's a little long, but groovy as hell. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-ClHS2pOhnLg.html (There is a bit of down time starting after 1:40 where it's just a lot of them doing individual things and warming up, but the really good part starts back up at 5:45 until the end.) Rhythm X 2010, an indoor drumline doing their show "Inspired" with music from Muse. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-4NjWSkRwI4I.html Just a few to get you started...I have many more to share.