yes, there is. 18:03, 29 April 2009 (UTC)
To get the key for the ammo cache, go to GNR radio station to talk to Three Dog. He will ask you to go install the satellite dish in exchange for information of where your dad when. Instead of doing that right away, go to Rivet City on your own and talk to Dr. Li to find out where your dad went. After that, go do the satellite dish mission then talk to Three Dog. Three Dog willb e impressed that you still kept your promise to install the satellite dish dispite finding out about dad yourself and will give you the ammo cache key.