Kevin Federline thinks he is a better parent that ex-wife Britney Spears. His lawyer has been busy subpoenaing former and current employees of the pop star’s that could shine some light on her parenting skills.

Mark Vincent Kaplan, Kevin Federline’s lawyer, has been busy lately serving various people working (or who used to work) for Britney with legal papers, as he prepares for the custody battle ahead.

Late Tuesday evening, Britney Spear’s former assistant Shannon Funk was served with a deposition subpoena at the airport in Long Beach, California, as People magazine reports.

Before Funk, it was Britney’s current assistant and bodyguard that received papers. Alli Sims, assistant to Brit and cousin, was served with her subpoena Sunday night during a party. She was reportedly very angry with the intrusion.

After her, Daimon Shippen, driver and bodyguard for the pop star, was served late Monday night in Santa Monica, California.

All will be questioned about Brit’s parenting style, the time she spends with the two little boys and the time she reportedly spends partying and drinking. It was previously rumored that Alli Sims had teamed up with Federline’s team but she denied such allegations and insisted that Britney is a “wonderful mom.”

Federline, 29, filed for primary physical custody of his two sons last week. He and Britney’s divorce was finalized in late July and they share joint legal and physical custody of Sean Preston (soon turning 2) and Jayden James (soon turning 1).

Last year, before there were any signs that the marriage between the pop icon and the back-up stage dancer turned Mr. Spears turned (failed) rapper was reaping at the seams, K-Fed shared his perspective on good parenting and said that show biz was no place for children.

He even went as far as saying he would take his family out of L.A. and raise the two boys on a farm, if that would be necessary.

Now, his lawyer is hinting that Sean and Jayden would be better off with their father and safe from “unnecessary risks.”

Los Angeles Superior Court Commissioner Scott Gordon has set up a hearing on September 14, when he will decide whether the media will have access to paperwork pertaining to Brit and Federline’s custody case.

The two former spouses have had their lawyers ask that the documents are kept sealed, in order to protect the children.