text: Drop Zones
  AF IMT 4304, DROP ZONE/LANDING ZONE CONTROL LOG
  6-170. The AF IMT 4304, Drop Zone/Landing Zone Control Log, Figure 6-21, page 6-57, is a scorecard
  for the Air Force. Since the aircrew computes the air release point on the DZ, the Air Force needs
  documentation of the crew's performance. The DZSTL ensures this form is complete and accurate based on
  the instructions that follow:
  DATE
  6-171. Enter either calendar or Julian date and year. When time is required, use local or GMT consistent
  with the date.
  LOCATION
  6-172. Enter DZ name.
  CCT AND UNIT
  6-173. Enter your (the DZSTL's) name and unit.
  DZ/LZ CONTROL OFFICER AND UNIT
  6-174. Enter the name of the person controlling the DZ.
  DROP ZONE SAFETY OFFICER AND UNIT
  6-175. Enter the names of the people (you or someone else) who is acting as the DZ safety officer and the
  unit safety officer. If you are doing both, then write in your name for both.
  LINE NO
  6-176. Enter the mission sequence number of each aircraft. Each line number on any given drop zone
  mission represents an individual pass over the DZ. If you have a multiple aircraft DZ, you should still use
  a separate line number for each aircraft. For example, use three line numbers for a three-ship operation.
  Assign a line number to no-drop passes also. Write the reason for each no-drop in remarks.
  TYPE ACFT
  6-177. Enter the mission design series.
  UNIT
  6-178. Enter the aircraft's (using) unit.
  CALL SIGN
  6-179. Enter the call sign of the lead aircraft and, if applicable, formation position numbers.
  TYPE MSN
  6-180. See the legend for abbreviations of the types of missions.