RE: 400 feet
KE is [link=http://www.faa.gov/about/initiatives/uas/reg/media/frnotice_uas.pdf]this[/link] the statement you are refering to ?
"Policy Statement
The current FAA policy for UAS operations is that no person may operate a UAS in
the National Airspace System without specific authority. For UAS operating as public
aircraft the authority is the COA, for UAS operating as civil aircraft the authority is special
airworthiness certificates, and for model aircraft the authority is AC 91-57."