Yes, I dont, but arccording to what you said, it seems you are know less than me about space and rocket. I think you should read the article below. ICBM doesnt go like what you said change the software a bit. After launching a ICBM may release several independent warheads, and penetration aids such as metallic-coated balloons, aluminum chaff, and full-scale warhead decoys. And I aslo suggest you read some article about ICBM. Launching ICBM is a very easy phase, but make the ICBM hit the target authenticitily is far difficult than just launching a rockets.
The following flight phases can be distinguished:
boost phase: 3 to 5 minutes (shorter for a solid rocket than for a liquid-propellant rocket); altitude at the end of this phase is typically 150 to 400 km depending on the trajectory chosen, typical burnout speed is 7 km/s.
midcourse phase: approx. 25 minutessub-orbital spaceflight in an elliptic orbit; the orbit is part of an ellipse with a vertical major axis; the apogee (halfway the midcourse phase) is at an altitude of approximately 1,200 km; the semi-major axis is between 3,186 km and 6,372 km; the projection of the orbit on the Earth's surface is close to a great circle, slightly displaced due to earth rotation during the time of flight; the missile may release several independent warheads, and penetration aids such as metallic-coated balloons, aluminum chaff, and full-scale warhead decoys.
reentry phase (starting at an altitude of 100 km): 2 minutesimpact is at a speed of up to 4 km/s (for early ICBMs less than 1 km/s); see also maneuverable reentry vehicle.
I am reading wiki, but in wiki artcle, there are so many defference between ICBM and rockets.
