Here I am concerned about traveling with batteries and they were never looked at. However, going into Mexico the customs officials never seen an IN 1 so here I stand as they rummage thru the hard case with all the accessories and can't figure what the IN 1 is. My answer is photo equipment and left it at that. After looking thru two cases and 15 minutes I was on my way. Thought all was clear. When flying in Mexico the people do not know the law or anything about NO FLY ZONES. On my third day of flying on beaches I just packed everything in the trunk and a minute later the Federalies Police came up 7 vehicles strong with anti- aircraft guns. Kidding about the AAG's but nevertheless they were all armed and LOOKING UP. I quickly disappeared. I did my homework before taking this trip and never was this place off limits. I found out on the 3rd day by a Canadian who has lived there for 20 years that knows city officials the area is off limits. I believe it's a recent law that was never really brought public. The long short of it all is if you do happen to encounter the same scenario be prepare to pay the police 3000 pesos or $200.00 and you'll most likely be ok. The equipment is not much good to them. Just be on your P & Q's and you should be okay and hopefully they won't take it for giggles. Hope this little experience is a help to others...