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dwilliams11 dwilliams11
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4 years ago
These are vestibules that have two interlocking doors on each side, where one door must be closed before the other can open:

▸ Mantraps

▸ Alleyways

▸ Safe hallways

▸ Citadels
Textbook 
Introduction to Security: Operations and Management

Introduction to Security: Operations and Management


Edition: 5th
Authors:
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yesimshayyesimshay
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4 years ago
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#2
3 years ago
hey thanks!
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