After the professor tells the students to count the number of legs, one student exclaims that there are only six legs. When the view switches back to the bug, there are four legs on the side facing the camera, along with a fifth appendage at chest level on the same side. When the bug faces the camera, the other side mirrors with the four legs and appendage.
A police car pursuit ends up with the suspect's SUV crashing into the army truck transporting the coffin and the weapons. Seconds later, nor the truck or the two army personnel appear to have been damaged or injured in any way.
When we see the coffin in the back of the truck, it appears they are driving through somewhat rough terrain, yet when the scene cuts to the two soldiers talking in the front, it seems they are driving through a really smooth highway.