C- 7J SPARTAN (PWAC)10-100. Time warnings include the following:TWO-HOUR 20-MINUTE TIME WARNING. This is used only on in-flight rigging missions.TWENTY-MINUTE TIME WARNING. At the 20-minute time warning, all in-flight rigging is complete. All jumpers are alert with helmets fastened. Special items of equipment are attached to their respective jumpers and inspected.Note. The 20-minute time warning may be increased to 30 minutes aboard the C-27J if the JMs need more time to accomplish their duties.TEN-MINUTE TIME WARNING. The aircrew turns on the jump caution lights and then notifies the JM that the inspections are complete. The JMs hook up to their respective anchor line cable and position themselves in the vicinity of the paratroop door before beginning to issue jump commands. If both doors are used on one pass, then both JMs issue the commands at the same time.Notes. All jump commands, arm-and-hand signals conducted by the JM Team are the same as outlined earlier in this chapter.The 10-minute time warning may be increased to 15 minutes aboard the C-27J if the JMs need more time to accomplish their duties.