Competent Ignition Source : A source of heat that is capable of kindling a wildfire. It may be in the form of a mechanical or electrical spark, glowing ember, open flame, chemical reaction or friction
National Wildfire Coordinating Group (NWCG), Glossary of Wildland Fire Terminology, NWCG Program Management Unit, National Interagency Fire Center, Boise, ID, USA 2014. http://www.nwcg.gov/pms/pubs/glossary/pms205.pdf, (For Fr - Amer) {45}