Found the following article online, use it to answer the question: What is the person that starts to bleed from his mouth have with him?

vista pacific airlines Flight 7500 a boeing 747-300 departs from Los Angeles to Tokyo. Passengers on board include a group of two vacationing couples, Lyn and Jack and Brad and Pia, who have secretly broken up; a thief named Jake; a suspicious businessman traveling with a strange wooden box, Lance; a young woman named Raquel; newlyweds Rick and the snobby Liz; and the goth Jacinta. Air hostesses Laura and Suzy welcome the passengers on board, and Suzy questions Laura about her secret relationship with the married captain, Pete.
A few hours into the flight, the plane hits turbulence that soon passes.
Lance has a panic attack and begins to bleed profusely from his mouth. When Lance suddenly dies, Captain Pete continues to Japan, moving the first-class passengers into economy and keeping Lance's body in the closed-off first class.
Laura notices plastic water bottles collapsing and quickly warns everyone to fasten their seatbelts, just as the cabin pressure drops. As the oxygen masks are dispensed above the seats, a thick smoke fills the cabin. After the cabin pressure returns to normal and the smoke disappears, Laura finds Raquel unconscious in the toilet and revives her with an oxygen tank. Meanwhile, the plane's radio has stopped working and Captain Pete cannot contact Tokyo air traffic controllers.

a strange wooden box