The AsyncCommand utility offers a solution to the problem of executing a series of commands each of which may need to complete one or more asynchronous operations before the next command is executed.
The utility is located here: http://trac.puremvc.org/Utility_AS3_AsyncCommand
Standard and MultiCore versions are included.
The author is Duncan Hall.
NOTE: Since this is a Standard/MultiCore utility, please post discussion about this utility on the main thread: http://forums.puremvc.org/index.php?topic=831.0