# Block 4 — Aircraft Survivability and Mission Planning

<p class="block-meta"><span class="b-block">Block 04</span><span class="b-time">Coming soon</span></p>

<p class="block-synopsis">Integrating low-observable design, electronic warfare, and tactics into a survivable mission. Threat-laydown analysis, route planning against a modern IADS, and the survivability tradeoffs that keep the B-21 in the fight.</p>

This block is under development and will be published in a later release. Block 1 — Radar Fundamentals — is available now in the sidebar.

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