The Humane Society of Central Oregon is asking for your help in tracking down a stolen trailer filled with disaster supplies.  The trailer was taken Saturday evening.  Surveillance video shows a white van that appears to stake out the lot earlier in the day. It returned after 8 p.m. and left, pulling the HSCO trailer. Inside the white cargo trailer were supplies to respond to a disaster, including wire crates, pet beds, tables and chairs. Anyone with information is asked to contact Bend Police.