JOINDER AGREEMENT Joinder Agreement, dated August 14, 1995, between Karabu Corp., a Delaware corporation ("Karabu") and Global Discount Travel Services LLC, a Nevada limited liability company ("New Party"). WHEREAS, Karabu is a party to that certain...

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                                                                   Exhibit 10.23

                                JOINDER AGREEMENT

            Joinder Agreement, dated August 14, 1995, between Karabu Corp., a
Delaware corporation ("Karabu") and Global Discount Travel Services LLC, a
Nevada limited liability company ("New Party").

            WHEREAS, Karabu is a party to that certain Karabu Ticket Program
Agreement, dated as of June 14, 1995 (the "Ticket Agreement") between Karabu and
Trans World Airlines, Inc. ("TWA"); and

            WHEREAS, pursuant to Section 18 any one or more Icahn Entities (as
defined in the Agreement) may, by executing and delivering this Agreement, be
joined as a party to the Ticket Agreement as if an original signatory thereto;
and

            WHEREAS, New Party is an Icahn Entity and desires to become a party
to the Ticket Agreement;

            NOW THEREFORE, the parties hereto desiring to be legally bound,
hereby agree as follows:

            1. New Party elects to be joined as a party to the Ticket Agreement
as if an original signatory thereto and shall be bound by all to the terms,
conditions and restrictions thereof.

            2. New Party represents that it is an Icahn Entity as defined in the
Ticket Agreement.

            3. Karabu shall remain liable for all of its obligations related to
the Ticket Programs described in the Ticket Agreement notwithstanding the xxxxxx
of New Party as a party to the Ticket Agreement.

            4. New Party's address for the purpose of receiving notices pursuant
to the Ticket Agreement is:

                  0000 Xxxxx Xxxxxxxxxx Xxxx
                  Xxx Xxxxx, Xxxxxx 00000
                  Attention:  Xx. Xxxxx X'Xxxx

                  with copies to:

                  Icahn Associates Corp.
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                  000 Xxxx 00xx Xxxxxx, 00xx Xxxxx
                  Xxx Xxxx,Xxx Xxxx 00000
                  Attention:  Xx. Xxxxxx X. Xxxxxxxx

                  Xxxxxx Xxxxxx Butowsky
                    Xxxxxxx Xxxxxx & Xxxx
                  000 Xxxx 00xx Xxxxxx, 00xx Xxxxx
                  Xxx Xxxx,Xxx Xxxx 00000
                  Attention:  Xxxxxxx X. Xxxx, Esq.

            5. This Agreement shall be governed by the laws of the State of New
York.

            IN WITNESS WHEREOF, the parties hereto have caused the execution of
this Agreement on the day first above written. 

                                        KARABU CORP.

                                        By:_____________________________________
                                        Its: Assistant Secretary

                                        Global Discount Travel
                                          Services LLC

                                        By: Karabu Corp., Member

                                        By:_____________________________________
                                        Its: Assistant Secretary


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