The results are "alarmingly low" and reveal "drastically less confidence" compared to one year ago, said the president of the group that ran the survey.
Some military and defense experts argue the Independence-class littoral combat ship equipped with the MCM mission package falls short of its predecessor.
CENTCOM confirmed the pilot made an emergency landing during combat operations. CNN sources told the outlet the aircraft was struck by an Iranian munition.
“There has been no decision to send ground troops at this time, but President Trump wisely keeps all options at his disposal," a White House official said.
By Phil Stewart, Idrees Ali, Erin Banco and Gram Slattery, Reuters