Final answer:
Step 1 of Trauma Field Triage Criteria involves assessing the patient's ability to follow commands.
Step-by-step explanation:
Step 1 of Trauma Field Triage Criteria involves assessing the patient's ability to follow commands. This is done by determining if the patient is able to respond appropriately to verbal stimuli, such as telling them to squeeze your hand or follow a simple command. If the patient is able to follow commands, they are considered to have a 'Glasgow Coma Scale (GCS) score' of 15, which indicates a less severe injury.