Each participant performed intubations with Miller ( MIL ; Mercury Medical , Clearwater , FL ) laryngoscope and RIFL in a PediaSIM CPR training manikin ( FCAE HealthCare , Sarasota , FL ) in 3 airway scenarios : ( a ) normal airway at rest ( without concomitant CC ) , ( b ) normal airway with mechanically controlled CC , and ( c ) difficult airway with concomitant CC .