That is definitely an interesting question. Presumably the helmet was sent to England some time after it was constructed in spring of '78. Johnston traveled there 4 or 5 times that year, according to page 83.
I scanned a few more relevant images. I had not seen Johnston holding the jetpack harness before.
I scanned a few more relevant images. I had not seen Johnston holding the jetpack harness before.
![makingtesbboba00.th.jpg](http://img404.imageshack.us/img404/4243/makingtesbboba00.th.jpg)
![makingtesbboba01.th.jpg](http://img577.imageshack.us/img577/8587/makingtesbboba01.th.jpg)
![makingtesbboba02.th.jpg](http://img156.imageshack.us/img156/9258/makingtesbboba02.th.jpg)
![makingtesbboba03.th.jpg](http://img526.imageshack.us/img526/7452/makingtesbboba03.th.jpg)
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