Cape Cod man held mother at knifepoint, fired at officers during standoff, authorities say

Prosecutors say officers recovered 37 shell casings in the area that came from three different guns following an hourslong standoff. Subscribe to WCVB on YouTube now for more: http://bit.ly/1e8lAMZ Get more Boston news: http://www.wcvb.com Like us: https://www.facebook.com/wcvb5 Follow us: https://twitter.com/WCVB Instagram: https://www.instagram.com/wcvb5/