They define themselves thusly, "Secure America Now is a non-partisan 501(c)(4) nonprofit organization. Contributions are not tax deductible." Bolding is mine. So, who are they? Welllll.....
ADVISORY BOARD MEMBERS
Governor Mike Huckabee
Ambassador John Bolton
Aha! That's just three of them, the other names aren't on my radar. But these guys would seem decidedly partisan, wouldn't they? Especially when Bolton is quoted right below his name, saying, "The biggest threat to our national security is sitting in the White House," and Caddell is quoted saying, "We have a President who has suppressed the truth."
Huckabee is of course one of the many people running for the GOP nomination for president. What that has to do with Iran and nuclear readiness, I can't be sure. But I thought I'd just point out, this is just another one of those groups with a jingoistic name, claiming to be non-partisan when it isn't. It's the exact thing the IRS should be looking into, regarding tax exempt status.
Also of note, one of their other points of interest is Benghazi!
Here's one of their ads: