UDT teams were gradually transitioned into Seal Teams. Both served in Viet Nam. UDTs usually tasked with demolition jobs - blowing bunkers, etc. Ultimately, all UDT Teams became Seal Teams. SEALs got additional land combat training - all UDTs were jump qualified, etc.
I've recently read of another SEAL who was at the bar and memorial, and he saw Ventura on the ground outside as Kyle was walking away. He also confirmed the negative idiotic things Ventura was saying that were disrespectful and disruptive at a wake for dead sailor.
�That rifle on the wall of the labourer's cottage or working class flat is the symbol of democracy. It is our job to see that it stays there.� George Orwell
