When Robert finds Celine after she has been kidnapped by O'Reilly and Jackson we see several times that O'Reilly has bled from her left nostril and the blood has run down onto her bottom lip. After she gets shot, the blood stops at her top lip.
Random point. The hiker who stops Ewan McGregor during his escape is Timothy Olyphant, in only his second film role. You may not know the name, but he went on to play the killer in Scream 2, a drug dealer in Go, and a detective in Gone in 60 Seconds. Well, I was surprised.