It is more complicated than that. Tech Aviation had three facilities as of that filing. So, the $4.5M was spread across all three. I still think my $2-3M guess is close but it is really hard to tell without information from management.
Here is the information from the 2005 10-K filing in your message: "Tech Aviation has a facility in Wilkes-Barre/Scranton, Pennsylvania as a result of the acquisition on March 31, 2005 of Tech Aviation Service, Inc. (“Tech”) and a facility in Garden City, Kansas as a result of the acquisition on March 31, 2005 of Central Plains Aviation, Inc. (“CPA”). Tech Aviation also manages an FBO facility in Niagara Falls, New York."