text: Chapter 4
  SECURITY
  4-227. From the time the team leaves the last secure point until exfiltration, security remains a constant
  and immediate concern. Teams plan constant and sustained security for every phase of the mission. In
  the security role, the team can use both active and passive security devices. Teams can stage objects in
  and around the site that will identify any presence. All security devices must be able to withstand
  scrutiny.
  PROTECTION AND SUSTAINMENT SUPPORT
  4-228. In an urbanized AO, the LRS team can achieve protection and sustainment in stay-behind or
  rollover missions.
  RECONNAISSANCE OPERATIONS
  4-229. This is the second mission that a LRS team can perform in an urban environment. Due to the
  increased chance of compromise in an urbanized environment, the commander should consider
  employing LRS teams in a very limited reconnaissance role. The LRS team plans reconnaissance
  missions on urbanized terrain in as much detail as possible. Considerations include—METT-TC, the type
  of mission, planning time, specialized equipment need to accomplish the mission, and specialized
  equipment weight and size.
  PLANS
  4-230. Urban areas are categorized in the following manner, by population size:
  • Villages (population of 3,000 inhabitants or less).
  • Towns (population of over 3,000 to 100,000 inhabitants and not part of a major urban
  complex).
  • City (population over 100,000 to 1 million inhabitants).
  • Metropolis (population over 1 million to 10 million inhabitants).
  • Megalopolis (population over 10 million inhabitants).
  RULES OF ENGAGEMENT
  4-231. All LRS team members must receive a detailed briefing on the rules of engagement before
  deployment in an urban environment.
  VISIBILITY
  4-232. Weather, smoke, and dust always obscure visibility. Military operations can change urban
  terrain, shifting shadows and dead spaces around every time a building collapses or a new pile of rubble
  forms.
  SIZE, LOCATION, AND HISTORY
  4-233. Within the city, urban terrain differs based on size, location, and history.
  Industrial Areas and Residential Sprawl
  4-234. Residential areas have some houses or small dwellings with yards, gardens, trees and fences.
  Streets normally form rectangular or curving patterns. Industrial areas usually have low (one- to
  three-story) flat-roofed buildings. Most of these are factories or warehouses, and they are generally
  located on or along major rail and highway routes. Both types of terrain have many open areas.
  Core Periphery—A core periphery has narrow streets (12 to 20 meters wide) and continuous
  fronts of brick- and heavy-walled-concrete buildings. Most buildings are about the same height,
  ranging between two and three stories in small towns and five to ten stories in large cities.