The NASA administrators and scientists estimate that humans will be able to locate alien life within the next 20 years.
“Just imagine the moment, when we find potential signatures of life. Imagine the moment when the world wakes up and the human race realizes that its long loneliness in time and space may be over — the possibility we’re no longer alone in the universe,”
more at the source: http://connecticut.cbslocal.com/2014/07/...-20-years/
I certainly don't see them revealing that, it must be time for their budget increase.