1.   Ambush patrols at night were always in single file, with no point or flank security.

2.   Some patrols are deliberately high profile.

3.   Among their efforts are regular patrols by transit officers, security cameras and stations with open-air designs that keep everything in public view.

4.   And family and friends of Hernandez say the young man was unaware the camouflaged patrol was in the area and was not warned by the Marines before the shooting.

5.   A daily boat patrol is always out to enforce it.

6.   A senior police official said that enhanced patrols would be at government office buildings, courthouses and armories.

7.   But family and friends of Hernandez say the young man was unaware the camouflaged patrol was in the area and was not warned by the Marines.

8.   But nationalists say the patrols are provocative and inevitably lead to confrontations.

9.   But the patrols are not foolproof.

10.   By some accounts, Clarke concluded the police patrols were a neighborhood nuisance and asked that they be stopped.