I do not understand the scene in Arrival in which Ian and Louise are coming back to the spaceship and during the communication with the aliens the charge exploded.
I did not notice who installed the charge and why. I suppose that it was the army. Why were our two "translators" allowed to enter the spaceship when the charge was in? I remeber that the scene occurs after the misinterpretation of the word "weapon". But the reaction of the army seems to me a little bit odd.