Explain the 'buddy system' requirement for re-entry teams.

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The main idea is ensuring continuous monitoring and quick safety response by pairing each entrant with a dedicated outside observer. In re-entry operations, a buddy outside the hazard area stays in constant contact with the entrant, watches location and condition, and can immediately call for help or initiate rescue if signs of trouble appear. This setup creates a safety net: if one person struggles or becomes incapacitated, the observer is ready to intervene, coordinate with other teams, and ensure a prompt and organized response. Radios or other communication tools support that connection, but the crucial element is having a dedicated outside observer/attendant assigned to each entrant and maintaining continuous contact and awareness of their status and position.

Choosing solo work, optional buddying, or limiting a buddy to only the lead entrant would remove this continuous safety net and accountability, increasing risk.