The Osprey is back in the air after being grounded following a crash that killed eight U.S. troops in Japan, but questions remain about its safety.
Austin praised women in the military and said they should not be removed from front-line fighting posts.
US Defense Secretary Lloyd Austin wouldn't say whether the mines are part of a new round of military aid announced this week.
The latest tranche of weapons comes as worries grow about an escalation in the conflict.
