I’m currently deployed, what can I do to offset the fact that I don't have a pool to train in?
There is not really anything that can actually replace the pool but I usually recommend that people use either the row, jacobs ladder, or versa-climber machines as a substitute since they are low impact and full body workouts.
I don’t have a pool anywhere close to where I live and was wondering if there was a substitute for training for that?
Look up co2 tables to practice breath holds. But honestly there is not a substitute for the pool.