A pro-Hillary ClintonHillary Diane Rodham ClintonIntel Dem decries White House 'gag order' after Bannon testimony 'Total free-for-all' as Bannon clashes with Intel members Mellman: On Political Authenticity (Part 2) MORE super-PAC is digging into the archives to attack Donald Trump on national security, launching a variation of the 3 a.m. call ad used to attack Barack ObamaBarack Hussein ObamaMcCarthy: ‘No deadline on DACA’ Democrats will need to explain if they shut government down over illegal immigration Trump’s first year in office was the year of the woman MORE in 2008. 

In "Dangerous President," a red phone rings continuously while a President TrumpDonald John TrumpDems flip Wisconsin state Senate seat Sessions: 'We should be like Canada' in how we take in immigrants GOP rep: 'Sheet metal and garbage' everywhere in Haiti MORE sits idly by on Twitter. 

"The world is a dangerous place," a narrator says as the ad opens with a shot of the White House at 3 a.m. "At any hour, our president could be called on to act calmly, decisively, intelligently."

Meanwhile, the Trump character is sitting nearby scrolling through his Twitter feed.

"How great is Twitter? Boom. Just zinged another loser. Hit him with double exclamation. Bam!" says an actor portraying Trump. "Will someone get the damn phone? How annoying. Who is calling me at 3 a.m. anyway? Total loser."

The spot will begin airing in August, according to CBS News, in an ad buy worth at least $100,000 as part of Priorities' $35 million digital advertising program. 

"Donald Trump is the most dangerous and divisive nominee in modern history — and before he takes the stage tonight, Priorities USA is previewing a new digital ad we're calling 'Dangerous President,' " the group's communications director, Justin Barasky, said to CBS News.  

Trump has used that 2008 ad against Clinton throughout the campaign, saying that as secretary of State, she wasn't awake to answer phone calls on the 2012 terrorist attacks in Benghazi. 

"She's a disaster. Remember the famous call at 3 o'clock in the morning? She was sleeping, OK? She was sleeping. You know, it was her ad. Who would you like at 3 o'clock in the morning? Well, the phone rang, and she was sleeping," Trump said in April.