TMZ is reporting that Monday's custody hearing could be Britney Spears' last chance. She must show up and face the judge if she's got any chance of getting visitation with her kids back. The source tell them if she doesn't show, or is uncooperative, it will likey be all over .What's more, police sources say that Commish Scott Gordon will hear firsthand eyewitness accounts of last Thursday's altercation from LAPD, firefighters and paramedics who were on scene. The an order from a court hearing yesterday, where Kevin Federline's attorneys have formally requested a full report on exactly what happened at Britney's house last Thursday. They are also requesting the release of all the names of LAPD officers who responded to the scene. Also, the L.A County Sheriff's Department say they are ready for anything. If Britney loses it in court, they willl be there to "handle" the situation.