If it is not, decide whether the observed behavior is acceptable. This is the time to cancel the burn if you are not comfortable with the observed behavior. Inform crew of starting point and firing sequence. Give each member a map. Have a means of instant communication with all crew members.
Portable radios are very useful.
Be alert to changing conditions, and be prepared to change burning techniques or plow the fire out if an emergency arises. Burn so the wind will carry smoke away from sensitive areas. Mopup and patrol perimeters constantly during the operation, and thereafter until there is no further danger of fire escape or smoke problems.