The USGS NAIP Plus layer is transparent in places

[emxsys]

The USGS NAIP Plus maps imagery appears to treat the color white as transparent, allowing background layers to bleed through in areas. This is not a bug in World Wind, but rather an issue with the USGS NAIP Plus imagery served by The National Map. The National Map should be made aware of this issue.

The screenshot below demonstrates the background layer imagery showing through the tops are aircraft and buildings at the LAX airport: