Lessee shall not sublease or otherwise relinquish possession of any Item of Equipment, or assign, transfer or encumber its rights, interests or obligations hereunder or under any Equipment Schedule executed pursuant hereto unless expressly permitted pursuant to the terms of the Equipment Schedule relating to such Equipment. No assignment, transfer or sublease, in any event, shall relieve Lessee of, and Lessee shall remain primarily liable for, its obligations under each Lease Document.