How does Block 4 improve the survivability of fighters?

Block 4 significantly enhances the survivability of fighters primarily through improved stealth features and advanced defensive systems. These upgrades are crucial for modern air combat, where detection by enemy radar and targeting systems can lead to vulnerabilities.

Enhanced stealth capabilities reduce the radar cross-section of the aircraft, thereby making it more difficult for adversaries to detect and track the fighter. This reduced visibility allows pilots to operate in contested environments with a lower risk of being engaged by enemy fire.

In addition to stealth improvements, Block 4 introduces advanced defensive systems that provide fighters with greater situational awareness and protect against incoming threats. These systems include improved electronic warfare capabilities, which can jam enemy radar and missile systems, as well as advanced countermeasures that can confuse or mislead incoming missiles.

Together, these enhancements in stealth and defensive systems significantly contribute to a fighter aircraft's ability to survive and operate effectively in hostile environments, making them a critical part of the Block 4 upgrades.