January 31, 2013 6:36 am DEA Explains Hash Oil Lab Explosion The devastating explosion at a Midway hotel on January 30 was caught on video that has now been taken by federal agents as evidence. NBC 7 s Tony Shin reports. US & World Videos 0:53 What are those blue blobs piling up on San Diego beaches? Velella velellas! 0:35 Blue blobs washing up on San Diego beaches again 2:52 Poway Unified fires superintendent following investigation into bullying claims 0:34 5 people injured after falling from border fence 0:53 San Diego City Council Committee approves San Diego's next police chief