Two-In/Two-Out 5 : The safety rule requiring a minimum of two firefighters to enter a burning structure and a minimum of two firefighters to stand by outside to be available to rescue the firefighters inside the structure
Windsor Fire Protection District's, Glossary of Fire Protection Terms, CA, USA 2011. http://www.nfpa.org/press-room/reporters-guide-to- fire-and-glossary file:///C:/Users/user/Downloads/glossary_of_terms_ 2013.pdf, (Fr Srvc - Amer) {513}