The court is being shown a floor plan of Oscar Pistorius' house in order to try to piece together his movements in the moments before his girlfriend's death.
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The Defence Department is already in the middle of a congressionally-mandated review of the space force issue.
Detectives have charged 19-year-old Bilal Mumin with murder, grievous bodily harm and possession of an offensive weapon.
Members of the RMT on Arriva Rail North (Northern) walked out for 24 hours, with more stoppages due on Thursday and Saturday.