Frank Luntz
This is very similar to all the NatSec and “former Republican officials” who endorsed Hillary Clinton in 2016. Ultimately, it had no effect in winning over moderate Republican voters.
Jennifer Griffin
741 former high-ranking national security officials (233 general and flag officers) signed letter endorsing Kamala Harris for president. 15 four-star generals, 10 former cabinet secretaries, 10 service secretaries, and Repub leaders who served under Trump. https://www.nsl4a.org/nsl4a-announcements/nsl4a-endorsement-harris