"Only about half of available forces are mobilized in Louisiana and forces are available from neighboring states if needed," said Lt. Col. Mike Milord, a spokesman at National Guard headquarters outside Washington.
"forces are available from neighboring states if needed"
But "neighboring states" includes the whole south and the whole east coast, and the Ohio Valley (which will see massive flooding as the remnants dump massive amounts of rain on the Ohio Valley).
And, don't forget the unpaid, Non-Governmental Organization
VOLUNTEERS, i.e., Red Cross, Salvation Army, St Vincent de Paul, Southern Baptist Brotherhood (the big mass feeding kitchen semi's), Civil Air Patrol, Coast Guard Auxiliary, Community Emergency Response Teams, Urban Search and Rescue Corps, Ham Radio (Radio Amateur Civilian Emergency Service), the Volunteer Fire Departments, and the Volunteer Ambulance Corps. These unpaid, pure volunteers are being called upon at an unprecedented level.
And, don't forget that Col. Milford's manpower projections include Guard members who don't meet "Federal (age, physical) standards" for mobilization to Iraq, some categories of "retired" Guard members (over age 62, over 36 years of Guard service), etc.