Transport Canada released a new Civil Aviation Safety Alert in regards to UAVs and forest fires.
Unmanned Aircraft Interference with Manned Aircraft Operations including Near Forest Fires – Safety Impact and Consequences
The purpose of this Civil Aviation Safety Alert is to remind all persons operating unmanned aircraft (model aircraft and unmanned air vehicles or UAVs),for any purpose, about the safety impacts and consequences of interfering with manned aircraft operations, including firefighting aircraft. It is also a reminder of the consequences of contravening regulations pertaining to the use of unmanned aircraft. Unmanned aircraft, also called drones, are strictly prohibited from flying near or over forest fires.
The full details can be found here: http://www.tc.gc.ca/media/documents/ca-opssvs/casa-asac-2015-05.pdf