A crane is lifting a white Ford Escort van out of a lake. The slings under the van are only wet at the bottom - as if the crane had just been used to dip the van in the water and it was never submerged at all.
Frost and Carlisle are talking to Sgt. Donovan at the army base. As they walk away from her she salutes. But this is wrong since Frost is a civilian and the Captain is not in uniform.
A Captain at the army base gives the the bullet recovered from the body to Carlisle, the SIB Captain. Carlisle explains to him that it's 7.62mm rather than 5.56mm and thus cannot of been fired from an army weapon used in the exercise - which were all 5.56. This is true but it seems highly unlikely that the other Captain would need to have this basic difference about ammo explained to him. And in fact it's not as clear cut as that, since the British army was still using some 7.62 weapons in 1996 just as it does right now (2021). So an army weapon and shooter is *not* entirely ruled out by this bullet.
Later Carlisile shows Frost the spent bullet and now states it's a Russian 7.62 i.e. 7.62x39 rather than NATO 7.62x51 . *This* is the important detail that should have been revealed earlier in the post-mortem scene.
Later Carlisile shows Frost the spent bullet and now states it's a Russian 7.62 i.e. 7.62x39 rather than NATO 7.62x51 . *This* is the important detail that should have been revealed earlier in the post-mortem scene.