Continuity mistake: Claudette tells Lance they need to go back for the children. When she does he holds her down with one hand and has his gun vertical in this shot. Camera changes and now his gun is lowered. (00:12:40)
Continuity mistake: Ms Perkins fires her 1st shot into the 1st pane of glass, the second shot into the middle of the middle pane of glass. When the shot changes to John rolling off the bed, there are 3 holes in the glass before she fires her 3rd round. (00:55:50)