Brad Pitt Fighting for Joint Custody of the Kids

Does this mean we may have a custody battle in the horizon?
NBC News confirms that Brad Pitt is seeking joint physical custody of his six kids with ex Angelina Jolie—Maddox Jolie-Pitt, 15, Pax Jolie-Pitt, 12, Zahara Jolie-Pitt, 11, Shiloh Jolie-Pitt, 10, and twins Knox Jolie-Pitt and Vivienne Jolie-Pitt, 8.
At the time of the divorce announcement, Jolie asked for sole custody of the kids she shares with Pitt, only allowing the actor visitation rights. However, that was always said to be part of a temporary custody agreement.
The judge's response to Pitt's request should be interesting considering the A-lister has been under investigation over a mid-air altercation on a private plane Sept. 14 with Maddox.

The alleged incident led to an anonymous call being placed with the Los Angeles County Department of Children and Family Services over claims Brad had been physically and verbally abusive towards Maddox. At the time, a source close to the actor told E! News he "did not commit any abuse of his children" and was distraught over any allegations to the contrary.
Two FBI agents visited Angelina at her home in Malibu last month. They went on a three-hour fact-finding mission to determine if there is any evidence to warrant a formal investigation.
In a statement to E! News, a spokesperson for the FBI spokesperson confirmed the preliminary investigation is continuing.

"In response to your inquiry regarding allegations within the special aircraft jurisdiction of the United States; specifically, an aircraft carrying Mr. Brad Pitt and his children, the FBI is continuing to gather facts and will evaluate whether an investigation at the federal level will be pursued."
Brad has seen his kids twice since then, and Maddox for the first time just recently. According to a source, the teen was "mad at his dad" before they finally came together. Previously, a source revealed the actor was eager "to see the kids and to work out an arrangement that is best for them; he wants to work things out privately and amicably."