Decades of rocking out have not faded Heart's spark.

The duo shut things down at the Marine Corps Air Station Miramar for [article id="1653558"]"VH1 Divas Salute the Troops"[/article] when they played their breakout 1976 single "Crazy on You." This time, the ladies got some back up from relative newbies Grace Potter & The Nocturnals, with Potter splitting vocal duties with Heart frontwoman Ann Wilson.

Nancy Wilson kicked off the set with a nimble solo that scored excited cheers from the soldiers. The screams reached a fever pitch when the bass line from "Crazy" rattled in the speakers, and the service members went wild. Sporting a long dark coat with a generous silver pendant dangling from her neck, Ann helmed the first verse before strutting down the runway to the center of the crowd for the chorus. Potter, who was manning the keys, chimed in for the second verse, later picking up her mic and meeting Ann in the middle of the stage. Although she wasn't center stage, Nancy still commanded attention, leaping in the air as she clutched her guitar. Potter and Ann closed out the performance by belting the last notes in unison.

(Click here to see photos from "VH1 Divas Salute The Troops".)

Potter and crew also got a chance to run the stage solo. After an introduction from [article id="1653559"]"Jersey Shore" residents Snooki and The Situation[/article], the band cranked out their heady single "Paris (Ooh La La)." Despite her shimmery cocktail dress, Potter looked every bit the vintage rock bad girl, strumming her guitar, whipping her hair and wailing like she's been at this since forever. The bassist and another guitarist plucked fiery solos, and Potter finished the song at the edge of stage, belting directly to the enthused service members.

After a few final whips of her mane, Potter wrapped up the song with a sultry grin and strutted back toward her band.

The ladies added some rock-and-roll flair to a night packed with pop hitmakers like [article id="1653571"]Katy Perry, Nicki Minaj[/article] and [article id="1653576"]Keri Hilson.[/article]

What did you think of Heart and Grace Potter & The Nocturnal's performances at "VH1 Divas"? Let us know in the comments!

Watch bonus performances, browse photos, read all about the most-talked about moments, and find out how you can salute the troops at VH1's "Divas Salute the Troops" hub.