Possible Clues:

• Security task
• Security surveillance
• Mate admitting turn-on now and then in security detachment
• Ski ___ (group of mountainside rescue workers)
• Crafty Plato admits writing to one in charge of security
• Keep regular watch over
• Military detachment’s unconvincing role terminated early
• Guard's duty
• Speculator misses cues from task force
• Police arranged to take cut from plutocrat.