Does LL have a training program or do their officials receive training elsewhere?
I can't say all of the umpires I've seen in past years have had little training. Florence Stansbury, the first (only?) woman to have umpired home plate in the LLWS championship game lives 100 miles south of me, and I've had the privilege of working with her in FED baseball. She has also officiating the women's CWS.
(end shameless name drop)
I was pleased to see the officiating crew correctly take a run off the board on a bases loaded, 1 out play in the Canada-Venezuela game. Venezuelan batter hit a hot grounder to third, F5 stepped on third for the second out and threw home in attempt to retire R3, but F2 did not apply the tag, apparently scoring the run. However, R1 had retreated back to first instead of advancing to second. The defense, recognizing the base running error, threw to second and tagged (not forced) R1 between first and second for the third out. While the announcers and the Venezuelan coaches wanted the run to score, the umpires correctly ruled the run did not score since the third out was made by a runner before reaching the base he was forced to.