Despite bombs, boats and rubber bullets, dozens of sea lions are continuing to kill salmon near the Bonneville Dam. This month, biologists are trying one last time to scare off the problem sea lions, but if that doesn't work, they may try to kill them. Sea lions could kill as much as 10 percent of this spring's salmon run and biologists say if they cannot get the problem solved soon, the situation could get ugly. The problem is that the salmon are disappearing. An estimated 8,000 salmon will be lost this spring at Bonneville Dam. "The difficult part about it...