Terms of Service and Privacy PolicyLockheed Martin has unveiled the PAC-3 Adapted Capability Effector (ACE), a lower-cost interceptor for the Patriot surface-to-air missile system. @LockheedMartin introduces PAC‑3 ACE™ – a low‑cost, high‑performance interceptor built on the trusted PAC‑3® family. Other than the price point, it’s unclear to what degree the PAC-3 ACE missile differs from the PAC-3 MSE. This could include shorter range, lower ceiling, and a reduced ability to engage the most advanced threats Patriot batteries face. PAC-3 ACE has been adapted with this in mind, and drawing upon production facilities outside the United States will also help.