Angelina Jolie and Brad Pitt were nervous that she might not survive a dangerous new mission with the UN helping to battle drug lords.  Angelina, who is a goodwill ambassador for the UNHCR refugee organization, will be involved when the UN launches a fresh war on South American crime bosses.

A source told The Sun: “Brad’s terrified something bad will happen to her. It’s why he wanted to cement things with a wedding.”

Earlier this year Angelina wrote a farewell letter to her fiance Brad after becoming scared for her life on a UN mission.

She said: “I wrote a note to Brad and figured if anything happens he’ll find it.  They gave me a briefing and they said everybody needs to write down their blood type.”

Related: Brad Pitt and Angelina Jolie To Tie The Knot On Parents’ Wedding Anniversary

Brad and Angelina have children Knox, Vivienne, Pax, Shiloh, Zahara and Maddox together.  They announced their engagement last month.