I am in it security and would caution anyone about TSA locks. The locks use a 3 or 4 number to lock (without the TSA key). These are similar to many compxuter locks (the ones that cable lock the computer to the desktop). We regularly played with these and I had a co!league who could sit with one and consistently unlock them o. Less than 10 min. (My best was 20 Min) with 4 digits. The TSA lock I am looking at has 3 digits. Now my colleague had lots of time to work his technique and he could break them during a meeting without anyone ware that he was fiddling with a lock. No he had no magic secret, he just had an approach to trying the combinations until it broke. Much like kids can text without looking at the keyboard on their phones. I spoke with him recently on this very subject and he told me ha has not had as TSA approved lock that he couild not open in 5 minutes. They are far from secure, despite what the kubki theater TSA wants you to believe. Note, I regularly have to carry 10ka worth of forensic computer equipment on plants that has to go in checked baggage (very large pelican cases), I have been very lucky that none of this has been stolen (most likely because the baggage handlers have no idea what the stuff is worth (can they recognize a scsi write blocker... Probvsbly not)), but I worry about it on every flight. When I can, I carry my camera equipment in my carry-on baggage, fortunately for other reasons I don't travel to any destination that may be covered by the latest govt restrictions. If I did, it would be for business, so I would just include my travel photo rif in the case with my other equipment. Always research restrictions on where you are travelling to and from and plan accordingly. Not trying to start any wars here, just stating my experience. The TSA locks are IMHO junk, and keep the honest people honest.. If yoiyoiu trust the locks, then caveat emptor

I have used non oem batteries alongside canon batteries for years. I've not seen any difference in longevity. I use extended battery packs on 2 bodies and am a bit retentive in that I always have 2 sets of spares for both bookies (6d and 5dmiii). Your mileage may vary. I always worry that I'll run out of juice right when I need it, hence the large redundancy. This actually worked out in Peru last year. Someone's battery died and I flipped them one of my spares and they were extremely happy. Don't ask how many as/cf cards I carry around 😄