Sometimes you may experience foam in your hot tub. There are many things that can contribute to foam. Don't fret, foam is a common enough occurrence and can be dealt with especially if you regularly maintain your hot tub. There are products on the market that deal with foam and will reduce the bubbling foam.
There are technically no specific age requirements for soldiers seeking to become Army Rangers. Thus, the effective age limits are the same as those required to join the Army in the first place. Applicants must be at least 17 years old (or 18 without parental permission) and no older than 41 years old.
(down time for training was short) Army Rangers well they do not spend 20-25 years in the Rangers. Its is a short tour but a hell off a grind to make it but its back to regular army afterwards. They are quite a fit group. Marine force recon, they are good but they are not Seals.