Cross-Trained/Dual Role (CT/DR) : An emergency service that allows personnel trained in two service functions, such as fire suppression and emergency medical care, to function in either role
NFPA 45 Standard on Fire Protection for Laboratories Using Chemicals, 2004 ed. http://eetd-safety.lbl.gov/sites/all/files/NFPA%20 45-2015%20LBNL%20Class%20Slides.pdf, (Std: Fr Prac for Lab Using Chem - Amer) {204 NFC}