Beetle (Stinkbug?) ID - Pacific Northwest

Hello all,

I saw this beetle at sea level just north of Vancouver, British Columbia. I nearly bit into it as it was on a salmonberry I had just picked! I didn't notice it at first! I set it on a leaf and managed to film it for a bit. I apologize about the corny intro and outro. Any help with identification is much appreciated.

https://www.youtube.com/watch?v=rBQNR8UGRT4