Great story. I was a Combat Engineer Company Commander in Viet Nam in 1969-70. It is interesting how the roles have remained the same even though the technology is distinctly improved. Wish I had some of your toys back then. Lost one killed and 5 wounded in a year and a month. More than half the enemy activity in I-Corps was directed against us because we provided access and support for everyone else. They know where engineers left off work the day before and begin the next day, so be careful. You are all doing a terrific job. Freedom will ultimately flourish. Thanks.