Maryland News 5th Annual Weather/Field Trip Day May 23, 2012 / 1:28 PM EDT / CBS News 5th Annual Field Trip Day 5th Annual Field Trip Day 5th Annual Field Trip Day 5th Annual Field Trip Day 5th Annual Field Trip Day 5th Annual Field Trip Day 5th Annual Field Trip Day 5th Annual Field Trip Day 5th Annual Field Trip Day 5th Annual Field Trip Day 5th Annual Field Trip Day 5th Annual Field Trip Day 5th Annual Field Trip Day 5th Annual Field Trip Day 5th Annual Field Trip Day 5th Annual Field Trip Day 5th Annual Field Trip Day