Two long range radio towers used by Coast Guard Sector Portland, Ore., to monitor VHF marine radio communications in the Portland area will be undergoing tests, temporarily cutting off the sector command center's ability to send and receive radio transmissions. During several 15 minute blocks of testing the Coast Guard will be relying on four individuals along the Columbia River with VHF marine radios to listen for any distress calls. One of the individuals is a Citizens Action Network member. This marks the first time the Citizens Action Network will be used as a radio watch since its inception two years ago in the Puget Sound region.