Orion I numbers 601-612 (model 501.06) were built in 1984 for Leaseco. Ten (601-610) were used for shuttle service between outlying parking lots and the terminals, two (611-612) were liveried for intraterminal service. The RTS buses, according to a post in the NorCal Bus Fans group, are former Fort Worth "The T" coaches. I believe they are part of original fleet numbers 401-429, model T8J204, delivered late 1980.

ORION 601:

Orion 601 in August 1997. Two photos added 07/12/11.

ORION 602:

Orion 602 on June 6, 1997. One photo added 07/08/11.

ORION 603:

Orion 603 on June 6, 1997. One photo added 07/08/11.

ORION 604:

Orion 604 on December 31, 1996. One photo added 07/11/11.

ORION 607:

Orion 607 in August 1997. Two photos added 07/12/11.

ORION 610:

Orion 610 on June 6, 1997. One photo added 07/08/11.

ORION 612:

Orion 612 in June 1994. Two photos added 07/12/11.

RTS 613:

RTS 613 on June 6, 1997. One photo added 07/08/11.

RTS 616:

RTS 616 on June 6, 1997. One photo added 07/08/11.