The phrase "ambitious shield" is correct and usable in written English.
It can be used to describe a shield that is not only protective but also represents a strong desire to achieve or excel in some way.
Example: "The knight carried an ambitious shield, emblazoned with symbols of his quest for glory and honor."
Alternatives: "aspirational shield" or "determined shield".
Just as a rush to build an ambitious missile shield could provoke a renewed arms race with Russia, a decision to place weapons in space could increase rather than diminish the threat to American security.
Take NVIDIA for instance: it recently joined the fray with the ambitious (if pricey) SHIELD handheld, which will feature (among other things) the ability to stream select PC games, as well as play the usual slew of Android titles.
The states that are suing the Obama administration to block the implementation of ambitious plans to shield millions of undocumented immigrants from deportation stand to gain economically if the plans move forward, according to an analysis published Monday by the Center for American Progress.
The Shield is an ambitious little gadget, and the ability for players to stream PC games to the thing is sure to win it some fans, but is this thing really going to sell?
China appears to understand Pyongyang's dilemma, which is why it has continued its ambitious efforts to develop North Korea while shielding the new regime from internal collapse.
Beijing understandably sees a threat in an ambitious American push to create a missile shield that would exclude it while covering Japan and Taiwan.
By proceeding with an ambitious, almost urgent plan for an antimissile shield, she noted, the Bush administration was, in effect, abandoning the ABM treaty, an accord that Moscow has cast as a foundation for past as well as future treaties.
WASHINGTON — On his tenth day on the job, Defense Secretary Robert M. Gates signed off on an ambitious if politically charged plan to build a new missile shield in Europe.
Mr. Clinton's missile defense shield is a direct descendant of the far more ambitious initiative of President Reagan, nicknamed "Star Wars".
Simply by being the first to make it to air, Agents of SHIELD also unofficially functions as the anchor and entry point for Marvel's ambitious plans to expand further into TV.
