Can Aircrew Training Device (ATD) testing be restructured to better support concurrent simulator-aircraft development and delivery to the using commands while reducing cost, mitigating schedule risk, and effectively using a reduced number of experienced test personnel? Traditional development and acceptance testing followed an iterative process of identical activities conducted first by the contractor then repeated by the Government. This inefficient process increased program cost and schedule risk. The reality of force downsizing has contributed to test risk by reducing the number of personnel available top support a traditional test program, especially a program seeking to achieve concurrency. To deal with these problems, the B-2 ATD Government-Contractor team developed a combined test methodology to eliminate redundant test, consolidate similar activities and complement the major program objective, concurrent development and delivery of the ATDs. The purpose of this paper is threefold: first, to identify the test related problems associated with concurrent development of complex training devices for a highly software-dependent aircraft not yet in flight test; second, to illustrate the team-oriented structure and process of combined test and how it proved critical to B-2 ATD delivery and functionality; and third, to present the results - the on-time delivery of two B-2 Aircrew Training Devices that reflect the configuration and capabilities of the first operational B-2 delivered to Air Combat Command.