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{{balloon-launch
{{balloon-launch
| img link =
| header = SSI-21
| img link = File:rsz_11ssi_19.png
| launch date = May 16th 2015, 8:30 PDT
| launch date = May 16th 2015, 8:30 PDT
| launch site = Laird Park, Modesto, CA
| launch site = Laird Park, Modesto, CA
| flight duration =
| flight duration =
| landing date =
| landing date =
| landing coordinates = }}
| landing coordinates =
| last = 20
| next = 22}}
{{balloon-stub}}
{{balloon-stub}}
[[Category:High Altitude Balloons]]
{{balloon-footer}}
[[Category:High Altitude Balloons]][[Category:Balloon Launches]][[Category: ValBal Launches|41]]