Military Airfield Procedures..

Last night I took a quick trip to KYUM. On approach, the controller
mentioned that the "arresting gear was up" on the runway I was to land
on. Being unfamiliar with arresting gear and flying an Archer, I asked
the controller specifically what that meant. He indicated that it
consisted of a cable stretched across the runway about 6 inches high.
Since it seemed that this could seriously damage an Archer, I made sure
to land beyond it. (although it's exact position was difficult to
determine at night.)

Does anyone know what would have happened if I had landed on it? This
type of thing seems quite dangerous to GA aircraft.

On another note, as I was inbound on the ILS, the tower handed me over
to someone else for a "monitored" approach. This controller called my
position on the ILS and advised of any deviations. There was no
parallel ILS in progress. Is this just the way things are done at a
military field?

-Dan