PS: ooops...perhaps someone can identify markings on plane and helmet insignia on soldier standing to the left?
Oops, sorry about this, but I deleted the duplicate post for you and for some danged reason, it deleted the photo you posted from the first post. Sigh. Can you please re-upload for us.
And unfortunately, I have no way to get in touch with Joan. I do not have a viable email address for her, so the only way she will see this, is if she happens to stumble upon this post again.
Trust me I know the feeling!![post-1491-0-74325100-1394202812_thumb.jpg](http://www.6thcorpscombatengineers.com/forumnew/uploads/monthly_03_2014/post-1491-0-74325100-1394202812.jpg)
Here are some pictures I took of the Sentinel at the Udvar Hazy Center:
![100_3407.JPG](https://lh5.googleusercontent.com/-K4YJbzM8TUU/TVSHP7b9y7I/AAAAAAAAMlo/IY1QODyeMOs/s720/100_3407.JPG)
![100_3408.JPG](https://lh6.googleusercontent.com/-95tVfFtUGxQ/TVSHQ352R_I/AAAAAAAAMlo/ObKIudRIADE/s720/100_3408.JPG)
![100_3427.JPG](https://lh6.googleusercontent.com/-2CcbXvrow4c/TVSHbfmkx8I/AAAAAAAAMlo/GyC7v7jF0cw/s720/100_3427.JPG)