diff --git a/addons/hellfire/functions/fnc_attackProfile.sqf b/addons/hellfire/functions/fnc_attackProfile.sqf
index 013cf534c9..afbedb239a 100644
--- a/addons/hellfire/functions/fnc_attackProfile.sqf
+++ b/addons/hellfire/functions/fnc_attackProfile.sqf
@@ -22,7 +22,7 @@ _args params ["_firedEH", "_launchParams", "_flightParams", "", "_stateParams"];
 _stateParams params ["", "_seekerStateParams"];
 _launchParams params ["","_targetLaunchParams","_seekerType"];
 
-_targetLaunchParams params ["", "", "_launchPos"];
+_targetLaunchParams params ["", "", "_launchPos", "_launchDir"];
 _firedEH params ["","","","","","","_projectile"];
 
 // Get state params:
@@ -37,6 +37,10 @@ private _heightAboveLaunch = (_projectilePos select 2) - (_launchPos select 2);
 
 // Add height depending on distance for compensate
 private _returnTargetPos = _seekerTargetPos;
+if (_returnTargetPos isEqualTo [0, 0, 0]) then {
+    _initialDistanceToTarget = 8000;
+    _returnTargetPos = _launchPos vectorAdd (_launchDir vectorMultiply _initialDistanceToTarget);
+};
 
 private _closingRate = vectorMagnitude velocity _projectile;
 private _timeToGo = (_projectilePos distance _seekerTargetPos) / _closingRate;
@@ -52,6 +56,7 @@ private _atMinRotationAngle = _angleToTarget >= (0.5 * _pitchRate * _timeToGo);
 switch (_attackStage) do {
     case STAGE_LAUNCH: { // Gain height quickly to pass terrain mask
         _missileStateData params ["_heightBeforeStateSwitch", "_initialDistanceToTarget"];
+
         _returnTargetPos set [2, _heightBeforeStateSwitch + (_initialDistanceToTarget * sin 20)]; // 100 and 36.4 gives a 20 deg angle
 
         if (_heightAboveLaunch > _configLaunchHeightClear) then {
@@ -70,6 +75,7 @@ switch (_attackStage) do {
     };
     case STAGE_SEEK_CRUISE: { // Slowly gain altitude while searching for target
         _missileStateData params ["_heightBeforeStateSwitch", "_initialDistanceToTarget"];
+        
         // Before 4000 cruise at 5.7 degrees up, then level out
         _returnTargetPos set [2, _heightBeforeStateSwitch + (_initialDistanceToTarget * sin 5.7)];
         
diff --git a/addons/laser/script_component.hpp b/addons/laser/script_component.hpp
index 450614d68e..b0d9951bf3 100644
--- a/addons/laser/script_component.hpp
+++ b/addons/laser/script_component.hpp
@@ -2,9 +2,9 @@
 #define COMPONENT_BEAUTIFIED Laser
 #include "\z\ace\addons\main\script_mod.hpp"
 
- #define DRAW_LASER_INFO
+// #define DRAW_LASER_INFO
 // #define DEBUG_MODE_FULL
- #define DISABLE_COMPILE_CACHE
+// #define DISABLE_COMPILE_CACHE
 // #define ENABLE_PERFORMANCE_COUNTERS
 
 #ifdef DEBUG_ENABLED_LASER
diff --git a/addons/missileguidance/functions/fnc_guidancePFH.sqf b/addons/missileguidance/functions/fnc_guidancePFH.sqf
index 8d907dceef..01e7166482 100644
--- a/addons/missileguidance/functions/fnc_guidancePFH.sqf
+++ b/addons/missileguidance/functions/fnc_guidancePFH.sqf
@@ -59,10 +59,17 @@ if ((_pitchRate != 0 || {_yawRate != 0}) && {_profileAdjustedTargetPos isNotEqua
 
         _commandedAcceleration = _projectile vectorWorldToModelVisual _commandedAcceleration;
         _commandedAcceleration params ["_yawChange", "", "_pitchChange"];
+
+        if (isNil "_yawChange") then {
+            _yawChange = 0;
+        };
+        if (isNil "_pitchChange") then {
+            _pitchChange = 0;
+        };
         
         private _clampedPitch = (_pitchChange min _pitchRate) max -_pitchRate;
         private _clampedYaw = (_yawChange min _yawRate) max -_yawRate;
-
+        
         // controls are either on or off, no proportional
         if (_isBangBangGuidance) then {
             private _pitchSign = if (_clampedPitch == 0) then {
diff --git a/addons/missileguidance/functions/fnc_navigationType_lineOfSight.sqf b/addons/missileguidance/functions/fnc_navigationType_lineOfSight.sqf
index f5adcb718e..8c85392281 100644
--- a/addons/missileguidance/functions/fnc_navigationType_lineOfSight.sqf
+++ b/addons/missileguidance/functions/fnc_navigationType_lineOfSight.sqf
@@ -14,9 +14,33 @@
  *
  * Public: No
  */
-params ["_args", "", "", "_profileAdjustedTargetPos"];
-_args params ["_firedEH"];
+params ["_args", "_timestep", "_seekerTargetPos", "_profileAdjustedTargetPos"];
+_args params ["_firedEH", "", "", "", "_stateParams"];
 _firedEH params ["","","","","","","_projectile"];
+_stateParams params ["", "", "", "","_navigationParams"];
+_navigationParams params [["_lastLineOfSight", [0, 0, 0]]];
 
+// Semi-proportional navigation implemented via "Fundamentals of proportional navigation" by Stephen Murtaugh and Harry Criel
 private _lineOfSight = vectorNormalized (_profileAdjustedTargetPos vectorDiff getPosASLVisual _projectile);
-_lineOfSight vectorMultiply 50
+
+// the los rate is tiny, so we multiply by a constant of a power of ten to get more aggressive acceleration
+// this is just due to how we measure our LOS delta, the vectors involved are _tiny_
+private _losDelta = _lineOfSight vectorDiff _lastLineOfSight;
+private _losRate = if (_timestep == 0) then {
+	0
+} else {
+	10 * (vectorMagnitude _losDelta) / _timestep; 
+};
+
+private _commandedAcceleration = (velocity _projectile) vectorMultiply _losRate;
+TRACE_5("LOS NAV",_commandedAcceleration,_projectile,_losRate,_lineOfSight,_lastLineOfSight);
+
+// we need acceleration normal to our LOS
+private _commandedAccelerationProjected = _lineOfSight vectorMultiply (_commandedAcceleration vectorDotProduct _lineOfSight);
+_commandedAcceleration = _commandedAcceleration vectorDiff _commandedAccelerationProjected;
+
+if (accTime > 0) then {
+	_navigationParams set [0, _lineOfSight];
+};
+
+_commandedAccelerationProjected
diff --git a/addons/missileguidance/functions/fnc_onFired.sqf b/addons/missileguidance/functions/fnc_onFired.sqf
index 79c871ec8b..d2d1095151 100644
--- a/addons/missileguidance/functions/fnc_onFired.sqf
+++ b/addons/missileguidance/functions/fnc_onFired.sqf
@@ -119,7 +119,7 @@ private _pitchYaw = (vectorDir _projectile) call CBA_fnc_vect2Polar;
 TRACE_5("Beginning ACE guidance system",_target,_ammo,_seekerType,_attackProfile,_navigationType);
 private _args = [_this,
             [   _shooter,
-                [_target, _targetPos, _launchPos],
+                [_target, _targetPos, _launchPos, vectorDirVisual vehicle _shooter],
                 _seekerType,
                 _attackProfile,
                 _lockMode,
@@ -141,26 +141,26 @@ private _args = [_this,
         ];
 
 private _onFiredFunc = getText (configFile >> QGVAR(SeekerTypes) >> _seekerType >> "onFired");
-TRACE_1("",_onFiredFunc);
+TRACE_1("seeker on fired",_onFiredFunc);
 if (_onFiredFunc != "") then {
     _args call (missionNamespace getVariable _onFiredFunc);
 };
 
 _onFiredFunc = getText (configFile >> QGVAR(AttackProfiles) >> _attackProfile >> "onFired");
-TRACE_1("",_onFiredFunc);
+TRACE_1("attack on fired",_onFiredFunc);
 if (_onFiredFunc != "") then {
     _args call (missionNamespace getVariable _onFiredFunc);
 };
 
 _onFiredFunc = getText (configFile >> QGVAR(NavigationTypes) >> _navigationType >> "onFired");
-TRACE_1("",_onFiredFunc);
+TRACE_1("navigation on fired",_onFiredFunc);
 if (_onFiredFunc != "") then {
     _args call (missionNamespace getVariable _onFiredFunc);
 };
 
 // Run the "onFired" function passing the full guidance args array
 _onFiredFunc = getText (_config >> "onFired");
-TRACE_1("",_onFiredFunc);
+TRACE_1("general on fired",_onFiredFunc);
 if (_onFiredFunc != "") then {
     _args call (missionNamespace getVariable _onFiredFunc);
 };
@@ -169,7 +169,7 @@ if (_onFiredFunc != "") then {
 //  _args params ["_firedEH", "_launchParams", "_flightParams", "_seekerParams", "_stateParams"];
 //      _firedEH params ["_shooter","","","","_ammo","","_projectile"];
 //      _launchParams params ["_shooter","_targetLaunchParams","_seekerType","_attackProfile","_lockMode","_laserInfo","_navigationType"];
-//          _targetLaunchParams params ["_target", "_targetPos", "_launchPos"];
+//          _targetLaunchParams params ["_target", "_targetPos", "_launchPos"m "_launchDir"];
 //      _stateParams params ["_lastRunTime", "_seekerStateParams", "_attackProfileStateParams", "_lastKnownPosState","_navigationParams"];
 //      _seekerParams params ["_seekerAngle", "_seekerAccuracy", "_seekerMaxRange", "_seekerMinRange"];