. the assets of the trust consist of a recourse loan ( the 201cloan 201d ) initially made by the depositor to american tower asset sub , llc and american tower asset sub ii , llc ( the 201cborrowers 201d ) , pursuant to a loan and security agreement among the foregoing parties dated as of may 4 , 2007 ( the 201cloan agreement 201d ) . the borrowers are special purpose entities formed solely for the purpose of holding the secured towers subject to the securitization