The detachable floating barriers and signs saying Keep Out that the Corps is planning on using are not going to protect anyone or anything from a terrorist attack. Again, the vulnerable part of these type dams is the earthen portion and also the control rooms and locks. The locks are not being restricted....the earthen portion of the dams is not accessable by boat from the down river side....and are not included in the Off Limits areas presented by the Corps in the up river Off Limits areas...and the Control Rooms are already locked and have restricted access.....so the claim of trying to restrict these areas because of terrorists...does not hold water. We had a demolitions expert at our meeting and he brought this up and the Corps personnel present certainly did not disagree.