Anyone asking about federal employment in September/October/November are really asking "crystal ball" questions that nobody can answer. The federal budget goes from 10/1/XX to 9/30/XX. We are at the end of this fiscal year and the money is gone. Most agencies subscribe to "use it or lose it."
As for FY 2012, nobody knows what is going on. There is no budget in place which means the G may shut down letting non-essential folks out of the office, and thus those that do the hiring processing are not in. Or the G may end up on a "continuing resolution" for monthe where agency may not spend more than they one year prior in that month, and all non-essential spending is cut. That typically means hiring is placed on hold.
It does not resume until Congress passses the new budget and each agency can see how much they really got (vs. asked for) and what they have to do to balance their own books.
And just because the USMS wants to hire, they have to make sure FLETC has the money to run.
From now until December, if you hear anything, unless on their letterhead it is all speculation.
-In God we trust. All others, put your hands on the car and don't move.