(CNN) -- The scenes are becoming depressingly familiar.
A gunman opens fire on an American campus. Students, teachers and administrators duck for cover. Parents anxiously wait for their kids to check in, praying for the phone to ring.
It played out again Tuesday at Reynolds High School in Troutdale, Oregon, a city of 16,400 people 12 miles east of Portland.
A student at the school shot and killed another student before apparently taking his own life.
The shooter had an AR-15 rifle and a brown paper bag filled with more than 20 fully-loaded magazines, as well as knives, a law enforcement source told CNN.
The victim was a 14-year-old freshman, Emilio Hoffman. Police haven't yet disclosed the shooter's identity - or, more importantly, what compelled him to carry out such a horrifying act.
The shooting, the second in a week, is the latest in a long string. An attack at Seattle Pacific University last week killed one person and wounded two others.
Speaking in Washington, President Barack Obama said the nation should be ashamed of its inability to get tougher gun restrictions through Congress in the aftermath of mass shootings that he said have become commonplace in America.
"Our levels of gun violence are off the charts. There's no advanced, developed country on Earth that would put up with this," he said.
The shooting happened just as classes were about to get under way at Reynolds High School.
When it started, student Hannah League ducked into a classroom, where she and others huddled in a corner with no lights.
"I heard these pops and I thought they were firecrackers, but then I saw a teacher run out with his side kind of bloody," League told CNN's "Erin Burnett OutFront."
According to multiple law enforcement officials, the shooter was a student at the school. He entered the building that houses the school gym.
He shot and killed Hoffman in a locker room then apparently took his own life. His body was found in a restroom.
So, what now? Will this latest instance of gun violence compel Congress to act?
The President isn't optimistic.
To read more, click on the following link: