Yes, of course, but when one signs up for the military they can inject you with whatever they want. The FDA does not get involved. Combine that with an EUA, and all of a sudden you are injecting them and the nat sec apparatus 6 months from now if things get bad.
Main finding was at the high dose, there were some adverse events but no serious adverse events, and they all self-resolved without intervention. At the lower doses (0.3 and 0.1mpk), it still provided months of protection against infection assuming the "protective level" is accurate.
"Antibody level predicted to protect against chikungunya infection achieved within hours; projected to be maintained for at least 16 weeks at the middle and high doses"
https://www.upi.com/Archives/1991/01/31/Military-allowed-to-...
https://www.cdc.gov/flu/pandemic-resources/pdf/2018-Influenz...