Police at UMass Amherst are undergoing active shooter training. Dickinson Hall is being used because of its long hallways, many classrooms and multiple floors. Police are using fake ammunition rounds that sound like real bullets but just leave crayon marks. Active shooter training was developed in response to the 2007 Virginia Tech massacre.
A look back at some of this week's biggest headlines and the stories you may have missed.
Sunday marks two decades since the deadliest act of domestic terrorism in American history.
A campaign to put a female face on the $20 bill is gaining momentum.
The city of Northampton is close to becoming the first Pioneer Valley community to ban the use of single-layer plastic bags.