Iran fired missiles into eastern Syria, targeting the bases of militant groups it holds responsible for terror attacks (link).
An Iranian guided missile boat came within 800 yards of two US Navy ships, scanning them with spotlights. The Iranian vessel then targeted a US Navy helicopter with a laser targeting system. The Helicopter launched defensive flares in response (link).
The head of the Iranian Revolutionary Guards aerospace division General says they have built a third underground plant to manufacture ballistic missiles (link).
US Officials stated that Iran attempted to launch a cruise missile from a submarine. The test appears to have been a failure. http://www.foxnews.com/world/2017/05/03/iran-attempted-missile-launch-from-submarine-us-officials-say.html
2/2/2017 Iran Successfully Tests Nuclear Capable Cruise Missile