Where are the aliens?

Perhaps aliens don't exist. Or perhaps their signals are still to reach us

Is there life elsewhere in the universe? More intriguingly, is there intelligent life and have intelligent aliens visited Earth? Conspiracy theorists have long claimed that the answers are “Yes” and that various governments have assiduously suppressed all evidence of such visits. 

The conspiracy theories got a new lease of life recently. The US government has declassified information about the Advanced Aerospace Threat Identification Program or AATI . The AATI was an investigation into Unidentified Flying Objects (UFOs).  The releases include video footage of encounters between UFOs and military pilots. AATI was operational between 2007 and 2012. A retired military officer who