Trivia: The photo of Cap in Tony's tower has the number #25 - the issue number of the comics in which Captain America dies.
Trivia: When Thor and Hulk battle on the helicarrier, Thor hits Hulk, who collides with a Harrier jump jet. The prop Harrier which Hulk hits is the very same one that Arnold Schwarzenegger flew in True Lies.
Trivia: The first movie to ever gross over $200 million domestically in its opening weekend. (And somewhat coincidentally, it was released almost exactly ten years to the day after "Spider-Man" - the first movie to gross over $100 million in its opening weekend, and also based on a Marvel property).
Chosen answer: Jarvis only has access to Tony through certain methods. The Iron Man helmet has speakers for Jarvis to speak through and buildings Jarvis is installed in as well. It's likely Jarvis warned Tony through other means, but either A) Tony figured it out by the time he got the message or B) In all the chaos of the attack on the Hellicarrier, Tony didn't see it.
Brad ★