South Korean soldiers carry an injured man upon arrival from the island of Yeonpyeong at a military port in Incheon, west of Seoul, South Korea, Wednesday, Nov. 24, 2010. South Korea's troops were on high alert Wednesday as their government exchanged threats with rival North Korea following a frightening military skirmish that ratcheted tensions on the peninsula to new extremes. (AP Photo/ Lee Jin-man)

Photo by: Lee Jin-man

South Korean soldiers carry an injured man upon arrival from the island of Yeonpyeong at a military port in Incheon, west of Seoul, South Korea, Wednesday, Nov. 24, 2010. South Korea's troops were on high alert Wednesday as their government exchanged threats with rival North Korea following a frightening military skirmish that ratcheted tensions on the peninsula to new extremes. (AP Photo/ Lee Jin-man)