Smaller bases expand troop presence, but also pose new risks.

"The concern over security at the station imposes limits on one of its central missions: cooperating with Iraqi security forces. Iraqi soldiers at the station are prohibited from entering an operations room where U.S. soldiers discuss classified information. They are not allowed on the roof where Americans watch over the neighborhood. They live on the first floor while Americans inhabit the second. While certain information is shared with the Iraqi army leadership, the lower-ranking soldiers are kept out of briefing sessions, largely because the Americans are suspicious that information will be passed on to insurgents."

Arf