It's a challenge for grandparents to keep tabs on their grandchildren -- especially for Jon Voight, whose six grandkids hop-scotch across the world with their mom Angelina Jolie and Brad Pitt.

Voight is headed to Texas to shoot a new fox series, Lone Star.

"I'm gonna miss my connection to my grandkids," Voight, 71, said at a Television Critics Association event for the show in Los Angeles on Monday. "But I'm trying to Skype and use everything I can do to say in touch."

Jolie, 34, and Pitt, 46, typically take their brood -- Maddox, 8, Pax, 7, Zahara, 5, Shiloh, 4, and twins Vivienne and Knox, 2 -- to film sets worldwide.

Voight would love for Shiloh and the gang to visit him in Texas. "I hope, but it's gonna be tough.....It's very difficult for them to go anywhere easily. It's kind of easier for me to jump."

Along with his son James Haven, the Oscar-winning actor recently joined Jolie and Pitt on the red carpet for the Hollywood premiere of Salt. "It was wonderful for me," Voight said. "I'm always happy when I'm around my children."

Voight also had high praise for his daughter in the hit action flick. "I thought Angelina was great...I mean, really unusual. And there's nobody else who could have done what she did. I thought she was quite extraordinary in it."

He continued: "It was almost like Bruce Willis's movie, Die Hard, with a kind of intelligent, front-page, up-to-date international concern at the root of it, and very, very cleverly written. And then having this extraordinary performance of a girl in that part... I thought it was quite well done."