Two C-130 Hercules cargo planes will join civilian aircraft that have been dumping chemicals to break up the slick.
The US Navy and Louisiana National Guard have also been mobilised.
Fishermen - who face losing their livelihood from the spill - have been drafted in to help.
Wetlands off the Louisiana coast sustain hundreds of wildlife species and a major seafood and fishing industry.
The cause of last week's blast, which left 11 workers missing, presumed dead, remains unclear.
It has emerged that BP last year downplayed the possibility of such a disaster at the offshore rig.
In BP's 2009 exploration plan for the well, the firm suggested an oil spill was unlikely or virtually impossible, AP news agency reports.
The US government said on Friday it was putting on hold all new offshore drilling until the cause of the spill is investigated.
Last month, President Obama eased a moratorium on new offshore drilling.
Post je objavljen 01.05.2010. u 13:25 sati.