Good movie, But some questions remain,

Rating: 8/10 (7 December 2018)

I appreciate that sci-fi requires some suspension of belief in order for the author's scheme to work..
However in the case of this move I have to ask the following:-
1. Given the usual military response to unusual events, what happened to all the heavy equipment, mobile labs, etc etc?
2. Why persist in sending in small teams of ill equipped personnel on foot?
3. Without wishing to be misogynist, why send in a team of women when so many teams of men have failed?