B-2 SpiritOnce again, TransportTags is pleased to offer a significant piece of aviation history. Our B 2 Spirit tags are carefully crafted from an exhaust shield that we obtained from an avid aviation collector. The shield was removed from the aircraft in the late 1990s and replaced with an upgraded improved part. These tags are forged from titanium alloy, originally designed to endure extreme engine temperatures while minimizing the B 2s infrared signature.