I set Brodie down for his first official tummy time on his ocean mat and within 3 minutes he was army crawling and then he rolled over! I was lucky enough to be filming him when he did it and have it on video forever now! I also videoed him again a few minutes later and he rolled again and army crawled some more. Here is the 2nd video because it shows both! :) Several people have told me that this is EXTREMELY early for him to be able to roll over and crawl like that. When did your children first roll over?